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AmazFit Midnight Black GTS 4 Mini Smartwatch - W2176OV1N

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Abt Model: W2176OV1N UPC: 850037656660
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AmazFit W2176OV1N GTS 4 Mini Smartwatch with Midnight Black Silicone Strap

Compact and Power-packed


  • Lightweight Challenger
    Mighty in spirit, this stylish smartwatch has lightweight yet strong aluminum alloy middle frame integrated into the sleek watch body, and comes complete with a soft and skin-friendly silicone strap.
    • Ultra-Slim: 9.1mm
    • Ultra-Light: 19g
    • Middle Frame: Metallic
      • Note: 9.1mm is without the heart rate sensor base, and 19g is without the strap.
  • Heavyweight Power.
    This ultra-compact smartwatch packs a mega-powerful 270 mAh battery, for energy that challenges the limits of size.
    • Typical Usage1: 15 Days
    • Heavy Usage: 8 Days
    • Battery Save Mode: 45 Days
    • Continuous GPS Usage: 21 Hours
  • Color & Clarity Beyond Compare
    Colorful, crisp, and crafted from elegant glass, the 1.65" display of the Amazfit GTS 4 Mini makes your data shine like never before.
    • 1.65" HD AMOLED Display
    • 70.2% Screen-to-body Ratio
    • 309 PPI
  • Personalization Beyond Imagination.
    Whether you prefer a watch face with a traditional look, or something more modern, maximize your style with the Amazfit GTS 4 Mini.
    • Wide Selection of Watch Faces
    • Matching Always-on Displays2
    • Animated & Editable Watch Faces
    • Upload Your Own Photo
  • A Mighty Call to Action.
    Walking, running, cycling, yoga, and more. Whichever activity makes you challenge yourself, you'll likely find a sports mode for it on the Amazfit GTS 4 Mini.
  • A New Level of Performance.
    • PeakBeats™
      View specialized data after your workouts, like maximum oxygen uptake (VO₂ Max), full recovery time, training load and training effect, to stay informed of factors that can affect recovery, progress and exercise capacity.
    • Virtual Pacer
      Want to challenge yourself? Use the Virtual Pacer4 function and race against your previous running performance.
  • Swim with Confidence.
    A water-resistance grade5 of 5 ATM means the Amazfit GTS 4 Mini can resist the equivalent of up to 50 meters' water pressure. And whenever you fancy a trip to the pool or the beach, the watch's Pool Swimming and Open Water Swimming sports modes can scientifically track your swimming data.
  • Position with Precision.
    The watch supports five satellite positioning systems to help you make the most of your journeys into the great outdoors6, and uses circularly-polarized antenna technology to improve positioning performance and accuracy. Challenge yourself to see more of the big open world.
  • Health Made Effortless.
    The days of stopping what you're doing to measure your health7 data are over.
    • 24-hour Monitoring8 of
      • Heart Rate
      • Blood-Oxygen Saturation
      • Stress Level
  • Measurement Made Easy.
    Easily test9 your heart rate, blood-oxygen saturation (SpO₂) and stress level simultaneously, with a single tap of the watch, for a result in as quick as 45 seconds.
    • And to keep you on top of your game, the watch will send helpful health reminders10 for:
      • Abnormally High or Low Heart Rates
      • Abnormally Low SpO₂ Levels
      • Abnormally High Stress Levels
      • Stress-reducing Breathing Exercise
  • Dare to Dream.
    Track your sleep quality11 through the light and deep sleep stages, and even the REM stage - where dreaming is said to occur.
    You can check your results directly on the watch when you wake up, for maximized convenience.
    • Monitor Sleep Stages & Daytime Naps
    • Track Sleep Breathing Quality at Night
  • Plan to Achieve.
    • PAI Health Assessment System
      Challenge yourself to achieve a weekly PAI score of at least 100, for scientifically-studied health benefits12. PAI takes data from your workouts, and everyday activities like playing with your pet, and converts it all a single-value score, unique to you.
    • Menstrual Cycle Tracking
      Don't let an unexpected cycle interrupt your progress. Use the Amazfit GTS 4 Mini to record your current menstrual period, and it will provide predictions and reminders for upcoming menstrual & fertile periods, to help you plan ahead.
  • Advanced Assistance.
    Alexa Built-in
    Challenge what it means to take control of your day. Easily set an alarm, ask a question, get a translation and more, with the Amazon Alexa13 feature of the Amazfit GTS 4 Mini.
    • Note: *Amazon, Alexa and all related marks are trademarks of Amazon.com, Inc. or its affiliates.
  • Intuitive Interaction.
    Zepp OS
    Smooth interactions and a tailored UI make it easy to find what you're looking for with this light and low power-consuming OS.
    The rich app ecosystem features over 10 mini apps, including the Home Connect third-party app, to help enhance your daily life.
    • Features: Home Connect, Real-time Heart Rate, Watch Storage Space, Calories, Calculator, Pregnancy Assistant, Color Identification, Brush teeth, BMI, SOS Flashlight, Water Time, Holiday Calendar
  • Features that Challenge the Limits of Size.
    Make daily life a breeze with a wide selection of helpful features, including sedentary reminders to help you keep active throughout the day.
    • Features: Phone Call Notifications, SMS Notifications, App Notifications, SMS & Call Quick Replies14, Bluetooth Phone Music Control, Bluetooth Phone Camera Control, Find My Phone, Events Reminder, To Do Lists, Alarm Clock, Stopwatch, Pomodoro Timer, Weather, Sedentary Reminder, Screen Lock & Password, Do Not Disturb, More...
  • Support that Surpasses the Supreme.
    The Zepp App on your phone conducts health and exercise data display and analysis, features a watch face store, provides system updates for your smartwatch, and helps you intelligently manage your device.



  • Body Material: Aluminum alloy + plastic
  • Buttons: 1
  • Water-Resistance Grade: 5 ATM


  • Material: AMOLED
  • Size: 1.65"
  • Resolution: 336x384
  • PPI: 309
  • Touchscreen: Tempered glass + anti-fingerprint coating


  • Battery Capacity: 270 mAh (rated value)
  • Charging Method: Magnetic charger
  • Theoretical Charging Duration: Approx. 2 hours
  • Typical Usage Scenario Battery Life: Up to 15 days
  • Battery Saver Mode Battery Life: Up to 45 days
  • Heavy Usage Scenario Battery Life: Up to 8 days
  • Continuous GPS Usage: Up to 21hours


  • Health: BioTracker™ 3.0 PPG biometric sensor (supports blood-oxygen, 2PD + 1LED)
  • Movement
    • Acceleration Sensor
    • Geomagnetic Sensor
    • Ambient Light Sensor
  • Positioning: 5 satellite positioning
  • Connection: Bluetooth 5.2 BLE


  • Microphone: Support
  • Motor: Rotor motor
  • Supported Devices: Android 7.0 and above, iOS 12.0 and above
  • Application: Zepp App


  • Materials: Silicone, Quick release
  • Width: 20mm
  • Min. & Max. Wrist Dimensions: 135mm-190mm
  • Buckle: Interpolation

Sports Features:

  • Sports Modes: 126
  • Advanced Running Support: Virtual pacer
  • Workout Status: PeakBeats™

Health Features

  • 24H Monitoring
    • Heart rate
    • Blood-oxygen saturation
    • Stress level
  • Manual Measurement
    • Heart rate
    • Blood-oxygen saturation
    • Stress level
    • One-tap measurement
  • Sleep Quality Monitoring
    • Sleep stages (including REM)
    • Daytime naps
    • Sleep breathing quality
    • Sleep score
  • Health Assessment System: PAI
  • Breathing Exercise: Support
  • Menstural Cycle Tracking: Support
  • Health Reminders
    • Abnormally high & low heart rate
    • Low blood-oxygen
    • High stress level
    • Prompts to perform Breathing Exercise

Sports Categories

  • Running & Walking: Outdoor running, Treadmill, Walking, Indoor walking, Race walking
  • Cycling: Outdoor cycling, Indoor cycling, BMX
  • Swimming: Pool swimming, Open water swimming
  • Outdoor Workouts: Hiking, Rock climbing, Fishing, Hunting, Skateboarding, Roller skating, Parkour
  • Indoor Sports: Elliptical, Rowing machine, Stair-climbing Machine, Stair stepper, Spinning, Indoor fitness, Mixed aerobics, Cross-training, Aerobics, Group calisthenics, Body combat, Strength training, Step training, Core training, Flexibility training, Free training, HIIT, Yoga, Pilates, Gymnastics, Horizontal bar, Parallel bars, Battling ropes, Stretching
  • Dance: Square dance, Ballroom dance, Belly dance, Ballet, Street dance, Zumba, Latin dance, Jazz dance, Hip-hop dance, Pole dance, Break dance, Folk dance, Dance
  • Combat Sports: Boxing, Wrestling, Martial arts, Tai Chi, Muay Thai, Judo, Taekwondo, Karate, Kickboxing, Fencing, Jiu-Jitsu, Kendo
  • Ball Sports: Soccer, Beach Soccer, Basketball, Volleyball, Beach volleyball, Baseball, Softball, Rugby, Hockey, Table tennis, Badminton, Squash, Gateball, Cricket, Handball, Bowling, Polo, Racquetball, Billiards, Sepak takraw, Dodgeball, Water polo, Ice hockey, Shuttlecock, Indoor soccer, Footbag, Bocce ball, Pelota
  • Water Sports: Outdoor boating, Sailing, Kayak, Rowing, Dragon boat, Indoor surfing, Paddleboarding, Water skiing, Snorkeling
  • Winter Sports: Outdoor skating, Indoor skating, Curling
  • Leisure Sports: Hula hooping, Frisbee, Darts, Kite flying, Tug-of-war, Jianzi kicking, Esports, Air walker, Swing, Shuffleboard, Foosball, Motion sensing game
  • Board & Card Game: Chess, Checkers, Go, Bridge, Board game
  • Others: Jumping rope, Archery, Equestrianism


  • 1 The battery life may vary according to the settings, operation conditions and other factors. So the actual result may differ from the laboratory data. Typical usage scenario: Heart rate monitoring is always on and measures at 10-minute intervals, sleep monitoring enabled; 150 pushed messages a day; receive 3 call notifications per day; raise wrist to see watch time 100 times; test blood-oxygen 5 times per day; bright screen operations for 5 minutes per day; exercise 3 times a week with GPS running for 30 minutes each time. Battery Saver Mode: Engage the Battery Saver Mode on the watch, which turns off the Bluetooth connection, heart rate and other functions, and only records steps and basic sleep information.
    Heavy usage scenario: Heart rate monitoring is always on and measures at 1-minute intervals, sleep monitoring enabled with 8 hours of sleep breathing quality monitoring, stress monitoring enabled; 150 pushed messages a day lighting up the screen display; receive 3 call notifications per day; raise wrist to see watch time 100 times; test blood-oxygen 5 times per day; bright screen operations for 15 minutes per day; exercise 3 times a week with GPS running for 30 minutes each time.
  • 2 Always-on Display: When the screen is illuminated, it displays system content. When the screen is in standby mode, it displays the time. This function requires users to manually set "Always-on Display". The user can switch on or off this feature through the watch or Zepp App.
  • 3 The accuracy and sensitivity of the workout recognition feature varies from person to person, and are related to the posture and proficiency of the user during their workout. Short workout duration or frequent changes in posture may not trigger the automatic recognition feature. When you are driving a car or taking a bus, or taking part in other such activities, accidental recognition may be triggered if these activities are particularly similar to the selected workout mode. When you are conducting outdoor activities, if the GPS signal is poor or the AGPS data information has not been synchronized with the mobile phone for an extended period, these outdoor activities may be assessed as indoor activities.
  • 4 The Virtual Pacer is only compatible with Outdoor Running and Treadmill sports modes.
  • 5 According to the ISO 22810-2010 standard, the Amazfit GTS 4 Mini achieves a rating of 5 ATM, for a water-resistance of up to 50 meters, and is therefore suitable for splashes, snow, showering, swimming, or some high-speed water sports. It has passed third-party testing conducted by SGS, and the report number is SWT2205-06. Remove the watch when taking a hot shower or trip to the sauna, since too much steam can affect the seal and make it less water-resistant in future. Do not wear the watch with a leather or metal strap when swimming - when preparing to swim, change to a fluoroelastomer strap or other suitable type. For more information, please visit the support page at: support.amazfit.com
  • 6 Indoor positioning services are not supported. Positioning speed and accuracy may be affected by the surrounding environment. The number of satellites connected to simultaneously, and specific satellite connections, may depend on your location.
  • 7 This product and the Zepp App are not medical devices and cannot be used for medical purposes, or as basis for diagnosis of any medical condition. Detection results are provided for reference only. Please consult professional medical institutions if you feel unwell.
  • 8 24-hour monitoring of heart rate and blood-oxygen saturation (SpO₂) need to be enabled in the Zepp App. For heart rate monitoring, the user must enable Auto Heart Rate Monitor in the Zepp App, and the minimum value can be set to 1 minute. Abnormal heart rate alerts and the preset value need to be set in the Zepp App. To measure blood-oxygen saturation (SpO₂), please wear the watch tightly at one finger-width from the wrist, and keep your arm still for best results. SpO₂ alerts are sent if the detected rate is too low compared to the preset value, which needs to be set in the Zepp App, at a minimum of 80%. Movement, and environmental and physical characteristics can affect speed and accuracy of monitoring and measurement. The 24-hour stress level monitoring needs to be enabled on the watch or in the Zepp App. Alerts for high stress levels are based on the preset value, and prompts for the breathing exercise need to be enabled on the watch.
  • 9 To process the one-tap measurement and other manual metric measurements, please wear the watch tightly at one finger-width from the wrist, and keep your arm still for best results. Movement, and environmental and physical characteristics can affect speed and accuracy of monitoring and measurement.
  • 10 Alerts and reminders need to be enabled in the watch settings or Zepp App.
  • 11 Sleep monitoring can record night sleep and naps that last more than 20 minutes. Sleep Breathing Quality tracking needs to be enabled in the Zepp App or in the settings of the watch's Sleep feature.
  • 12 The HUNT Fitness Study indicates that people who maintain a PAI score of 100 or higher show lower risk of hypertension, heart disease, and type-2 diabetes. HUNT Fitness Study: This study was conducted by Professor Ulrik Wisloff of the Faculty of Medicine, Norwegian University of Science and Technology. It lasted for more than 35 years and had more than 230,000 participants. To use this function, all-day heart rate monitoring must be enabled.
  • 13 Alexa will be available via OTA update. To see the full list of 15 countries/regions and 14 languages supported, as well as how to activate and use Alexa on your Amazfit GTS 4 Mini, please visit support.amazfit.com.
  • 14 This feature will be added via OTA update.
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