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5 - 14 day battery

Extended battery life for your active lifestyle

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Affordable fitness tracking

Premium features without the premium cost. Starting at just $49, our smartwatches deliver the metrics that matter most to your health journey.

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90 Day Money back guarantee

Return with confidence within 90 days

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Syncs with Runmefit, Google Fit™ and Apple health™

Seamlessly sync your Kizuna smartwatch with the Runmefit app, then access either Google Fit or Apple Health to create a complete picture of your fitness and wellbeing.

Step 1 - Select your Kizuna device

Find your perfect match in a smartwatch that elevates your fitness journey while seamlessly enhancing your everyday life. Discover technology that not only tracks what matters most to you, but looks stunning on your wrist and connects effortlessly with your digital world.

Why buy from us?

Kizuna

OTHERS

Receive calls and messages

Yes

Yes

Heart rate, blood glucose and more

Yes

Yes

Cross-platform compatibility (works equally well with both iOS and Android)

Yes

Limited by OS

Affordable price point

Yes

No

5 to 14 days of battery life¹

Yes

No

Intuitive, distraction-free interface designed with Japanese minimalist principles

Yes

No

Water resistance for swimming²

Yes

No

Versatile design that transitions effortlessly from workout to workplace

Yes

No

Costly subscription plan

No

Yes

Our story Shop now

Extend the functionality by syncing with other apps.

Benefits of Integrating RunMeFit App with Google Fit

Integrating your RunMeFit app with Google Fit provides several key advantages:

Consolidated Fitness Dashboard

  • View all your fitness data in one centralized Google platform
  • Combine RunMeFit metrics with data from other compatible devices
  • Get a complete picture of your activity across all your apps and wearables

Enhanced Activity Tracking

  • Google Fit counts all your RunMeFit activities toward daily goals
  • More accurate step counts, calorie calculations, and distance tracking
  • Better recognition of workout intensity and heart rate zones

Comprehensive Health Insights

  • Access Google Fit's advanced health analytics and trends
  • Compare RunMeFit performance data against your overall fitness patterns
  • Receive more personalized recommendations based on combined data

Simplified Data Management

  • Automatic syncing eliminates manual data entry
  • Historical fitness records stored in one cloud-based location
  • Easier access to your fitness history when changing devices

Expanded App Ecosystem

  • Connect with additional Google Fit-compatible apps and services
  • Share your fitness achievements with a broader community
  • Access additional Google Fit features like Heart Points and Move Minutes

This integration transforms your RunMeFit experience from a standalone tracker to part of a broader health ecosystem, giving you more value from both your RunMeFit device and the Google platform.

Benefits of Integrating RunMeFit App with Apple Health

Integrating your RunMeFit app with Apple Health delivers several valuable advantages:

Unified Health Dashboard

  • All your RunMeFit data automatically appears in Apple Health
  • View fitness metrics alongside other health information in one place
  • Track progress toward Apple's activity rings with RunMeFit workouts

Comprehensive Health Overview

  • Combine RunMeFit exercise data with Apple Health's broader health metrics
  • Create a more complete picture of your overall wellness
  • Monitor how your workouts impact other health indicators

Seamless iOS Integration

  • Native experience for iPhone and Apple Watch users
  • Automatic background syncing without manual data entry
  • RunMeFit activities count toward Apple's daily activity goals

Enhanced Data Analysis

  • Access Apple Health's advanced trend analysis and visualizations
  • Compare RunMeFit performance against historical patterns
  • Receive more meaningful insights from combined datasets

Privacy-Focused Sharing

  • Selectively share specific health metrics with healthcare providers
  • Control exactly which RunMeFit data syncs to Apple Health
  • Maintain Apple's strong encryption and privacy protections

Expanded Ecosystem Compatibility

  • Connect with other Apple Health-compatible apps and devices
  • Leverage Apple's health research initiatives and features
  • Maintain workout history even if changing fitness trackers

This integration enhances the value of your Kizuna device by integrating with Apple's comprehensive health ecosystem, perfect for iOS users who want their fitness data working harmoniously with their Apple devices.

Step 3 - Get active and enjoy

  • Enhance your workout

    Elevate your workouts with Kizuna's complete training cycle: set goals, track real-time metrics, and analyze results to optimize performance. More than just activity tracking—it's your personal coach for smarter, more effective fitness.

  • Sports mode

    Elevate every activity with Kizuna's specialized Sports Modes. Each mode delivers metrics tailored to your specific workout, from running to swimming, capturing the data that matters most for your sport and helping you train with precision across all your athletic pursuits.

  • Sleep management

    Decode your sleep quality with Kizuna's intelligent tracking. Beyond counting hours, your device maps sleep cycles and patterns, delivering actionable insights that transform restless nights into powerful recovery.

    Wake up understanding not just how long you slept, but how effectively your body restored itself.

  • Meaningful health improvements

    Your Kizuna watch doesn't just track health—it transforms it. By revealing your body's unique patterns, it guides personalized changes that users report significantly improve sleep quality, heart health, and stress levels within weeks. Experience health enhancement, not just health monitoring.

  • Personalization

    Pair text with an image to focus on your chosen product, collection, or blog post. Add details on availability, style, or even provide a review.

  • Stress management

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wellness

Advanced Health Tracking*

Kizuna smartwatches track vital health metrics 24/7, including heart rate, blood oxygen, sleep, stress levels and more. The intuitive system transforms your data into actionable insights, offering personalized recommendations to improve your overall fitness and wellbeing.

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exploration

Compass, Altimeter, and Barometer Built in³


Kizuna smartwatches feature built-in compass, altimeter, and barometer sensors for precise navigation, elevation tracking, and weather forecasting. These tools help you stay oriented and prepared for changing conditions during all your outdoor adventures.

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protection

Water and dust resistant

Kizuna smartwatches feature robust water and dust resistance, protecting your device against splashes, rain, sweat, and dusty environments. This durable design ensures reliable performance during intense workouts, outdoor adventures, and daily activities, giving you confidence to take your fitness tracking anywhere.

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Training

Sports modes

Kizuna smartwatches feature over 100 specialized sport modes covering everything from running and cycling to jump rope and yoga. The intelligent system automatically detects common activities, ensuring all your workouts are tracked with tailored metrics without requiring manual activation.

Learn more

¹ Battery performance varies by model and usage patterns. See specific product details for accurate estimates.

² Water resistance ratings vary between models. Please check specific product pages for detailed guidelines on your watch's capabilities and warranty coverage.

³ Feature available on GTX model only

* Health metrics provided for fitness and wellness purposes only, not for medical diagnosis or treatment. Consult healthcare professionals for medical advice. Not a substitute for professional medical care.

Frequently asked questions

Are your smartwatches compatible with both Android and iOS?

Yes, all Kizuna smartwatches and fitness trackers are fully compatible with both Android and iOS devices. Our products work with:

Android phones running Android 4.4 or higher (depending on the model of smartwatch).

iPhones running iOS 9.0 or higher (depending on the model of smartwatch).

The free Kizuna companion app is available on both the Google Play Store and Apple App Store. The app provides the same features and functionality regardless of which platform you use.

Some advanced features may vary slightly between operating systems due to differences in how Android and iOS handle notifications and background processes. For example, iOS users may experience slightly different notification handling due to Apple's restrictions.

For optimal performance, we recommend keeping your phone's operating system and the Kizuna app updated to the latest version.

What's the difference between your fitness trackers and smartwatches?

Fitness Trackers (S-Series):

  • Streamlined, slimmer design focused on activity monitoring
  • Primarily track health metrics like steps, heart rate, and sleep
  • Typically offer 7-14 day battery life depending on the model.
  • More affordable price range.
  • Basic notification capabilities
  • App functionality tailored for fitness enthusiasts focused on health tracking

Smartwatches (G-Series & GTX-Series):

  • Larger, watch-style displays with more screen real estate
  • Full suite of smart features beyond fitness tracking
  • Advanced functionality like GPS, music control, and voice assistants
  • More robust notification handling and responses
  • Typically 2-7 day battery life depending on usage
  • Customizable watch faces and more extensive app ecosystem
  • Built for those wanting both fitness features and smart connectivity

Both categories are water-resistant, track essential health metrics, and connect to our mobile app. Your choice depends on whether you prioritize extended battery life and fitness tracking (fitness tracker) or prefer additional smart features and a more traditional watch appearance (smartwatch).

Do I need a subscription to use all the features?

No, Kizuna smartwatches do not require any subscriptions to access their core features. When you purchase a Kizuna watch, you get complete access to all tracking capabilities, health monitoring, notifications, and app connectivity without any additional fees.

All of these features are included with your one-time purchase:

  • Full fitness and activity tracking
  • Heart rate and sleep monitoring
  • GPS functionality (on supported models)
  • Sports modes and workout analysis
  • Smartphone notifications
  • Data storage and basic trend analysis

The Kizuna companion app is free to download and use with unlimited data syncing. We believe in providing a complete experience without hidden costs or premium paywalls.

Unlike some competitors, we don't lock advanced metrics or insights behind monthly subscription plans. What you buy is what you get—no surprise charges or feature limitations down the road.

Can I receive notifications from my phone on these watches?

Yes, all Kizuna smartwatches can receive notifications from your smartphone. Once connected via Bluetooth through our companion app, you'll be able to:

  • View incoming calls with caller ID
  • Read text messages and emails
  • Receive alerts from social media apps (Facebook, Instagram, Twitter, etc.)
  • Get calendar reminders and alarms
  • See notifications from most other apps installed on your phone

You can customize which apps send notifications to your watch through the Kizuna app settings. This allows you to stay connected with important alerts while filtering out distractions. Most models also support quick replies to messages and call rejection directly from your wrist.

Please note that notification features require your watch to be within Bluetooth range of your phone (typically 10-15 meters) and may vary slightly between models.

What's your return policy and warranty coverage?

Return Policy:
We offer a hassle-free 30-day return policy on all purchases. If you're not completely satisfied with your smartwatch, you can return it in its original condition and packaging within 30 days of delivery for a full refund or exchange. Please note that shipping costs for returns are not refundable unless the item is defective.

Warranty Coverage:
All Kizuna smartwatches come with a standard 6-month limited warranty that covers manufacturing defects and hardware malfunctions under normal use. The warranty does not cover damage from accidents, water damage beyond the stated water resistance rating, or unauthorized repairs.

To initiate a return or warranty claim, simply contact our customer support team with your order number and a brief description of your issue. We're committed to making the process as simple as possible.

How do I contact customer support if I have queries?

Our dedicated support team is ready to help with any questions or concerns. You can reach us through:

Email: support@kizuna.com (fastest response, typically within 24 hours)

Help Center: Browse our comprehensive knowledge base at kizuna.com/support.

For warranty claims or returns, please have your order number ready when contacting us. We're committed to resolving any issues promptly and ensuring your complete satisfaction with your Kizuna product.

How Long Until My Watch Arrives?

Your Kizuna watch will typically ship within 14 days after your order is confirmed. Standard shipping may take a further 2 weeks depending on your location and customs processing. We appreciate your understanding and aim to optimize delivery times. You can apply for a refund if your package is not delivered within 30 days. More details are available in our shipping policy.

Premium shipping options may be available at checkout for faster delivery.

Once your order ships, you'll receive a confirmation email with tracking information so you can monitor your watch's journey to your doorstep. For specific delivery estimates based on your location, please check the shipping calculator at checkout.

How can I sync with Google Fit? (Android users)

Syncing your RunMeFit watch with Google Fit allows you to consolidate all your health and fitness data in one place. Here's how to connect them:

Step-by-Step Instructions

1. Install both apps

  • Make sure the RunMeFit app is installed on your smartphone.
  • Ensure Google Fit is installed (pre-installed on many Android phones or available from the Play Store)

2. Open the RunMeFit app

  • Sign in to your RunMeFit account if needed
  • Make sure your watch is connected to the app

3. Access Settings

  • Tap on the "My Profile" tab.
  • Select "System Settings" then Data sharing.

4. Find connected services

  • Look for "Connect Apps" or "Third-Party Services"
  • Select "Google Fit" from the list of available connections

5. Authorize the connection

  • Tap "Connect" or "Enable"
  • Follow the Google account authorization prompts
  • Select which data types you want to share

6. Confirm successful connection

  • You should see a confirmation message or a toggle switch turned on
  • Your RunMeFit data will begin syncing automatically with Google Fit

After completing these steps, your activity data, workouts, heart rate, and other metrics tracked by your RunMeFit watch will automatically appear in your Google Fit dashboard.

If you encounter any issues with the connection, try restarting both apps or check for updates to ensure you're running the latest versions.

How can I sync with Apple Health?

Syncing your RunMeFit watch with Apple Health allows you to consolidate all your fitness data in one place. Here's how to connect them:

Step-by-Step Instructions

1. Install the RunMeFit app

  • Download the RunMeFit app from the App Store if you haven't already
  • Sign in to your RunMeFit account

2. Ensure your watch is connected

  • Make sure your RunMeFit watch is paired and connected to the app
  • Confirm it's syncing data correctly to the RunMeFit app

3. Access App Settings

  • Open the RunMeFit app
  • Tap on the "Profile" or "Me" tab
  • Select "Settings" or "App Settings"

4. Find Health app integration

  • Look for "Connected Apps" or "Third-Party Connections"
  • Select "Apple Health" from the list of available services

5. Grant permissions

  • Tap "Connect" or "Enable"
  • When the Apple Health permission dialog appears, select which data types you want to share
  • Typically you'll want to enable both "Read" and "Write" permissions

6. Confirm the connection

  • Return to the RunMeFit app to verify the Apple Health connection shows as active
  • You may also check Apple Health to see if RunMeFit appears as a connected data source

Once connected, your RunMeFit activities, workouts, heart rate data, and other metrics will automatically sync to Apple Health, contributing to your daily activity rings and overall health data.

If you have any syncing issues, try restarting both apps or check for updates to ensure you're running the latest versions.

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