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Best Heart Rate Variability Analyzer

Scosche Rhythm 24 Bundle - Including Rhythm 24, Charge Case, Gray Replacement Strap, and Extra Charger

  • HYPER-ACCURATE - Patented optical sensor technology for highly accurate monitoring and measurement. Green + Yellow Optical Sensors Provide superior measurement with all skin tones..
  • WORKS WITH VIRTUALLY ANY DEVICE - Great for use with smartphones, tablets, smart and sport watches, exercise equipment and many other devices that support Bluetooth Smart or ANT+ heart rate data..
  • 24 HOUR BATTERY LIFE - Extended use rechargeable battery allows you to workout for up to 24 continuous hours..
  • CUSTOMIZABLE - Change HR zones and modes in the RhythmSync app. Modes include Heart Rate Only, Running (Cadence + Distance), Cycling (Cadence), Swimming, Heart Rate Variability (HRV)..
  • INTERCONNECTED ARMBAND DESIGN - The Rhythm24 has an updated quick-lock interconnected armband design to keep the Rhythm24 securely attached to your arm during intense workouts..
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Scosche Rhythm 24 Heart Rate Monitor Armband and Bluetooth Wireless Earbuds Sport Bundle (Blue)

  • HYPER-ACCURATE - Patented optical sensor technology for highly accurate monitoring and measurement. Green + Yellow Optical Sensors Provide superior measurement with all skin tones..
  • WORKS WITH VIRTUALLY ANY DEVICE - Great for use with smartphones, tablets, smart and sport watches, exercise equipment and many other devices that support Bluetooth Smart or ANT+ heart rate data..
  • 24 HOUR BATTERY LIFE - Extended use rechargeable battery allows you to workout for up to 24 continuous hours..
  • CUSTOMIZABLE - Change HR zones and modes in the RhythmSync app. Modes include Heart Rate Only, Running (Cadence + Distance), Cycling (Cadence), Swimming, Heart Rate Variability (HRV)..
  • DURABLE AND PORTABLE EARBUDS: Certified IPX4 rated provides protection from sweat and splashes of water, these Bluetooth earbuds give you wireless freedom of up to 33 feet from your device.
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Scosche Rhythm 24 Heart Rate Monitor Armband and Bluetooth Wireless Earbuds Sport Bundle (Gray)

  • HYPER-ACCURATE - Patented optical sensor technology for highly accurate monitoring and measurement. Green + Yellow Optical Sensors Provide superior measurement with all skin tones..
  • WORKS WITH VIRTUALLY ANY DEVICE - Great for use with smartphones, tablets, smart and sport watches, exercise equipment and many other devices that support Bluetooth Smart or ANT+ heart rate data..
  • 24 HOUR BATTERY LIFE - Extended use rechargeable battery allows you to workout for up to 24 continuous hours..
  • CUSTOMIZABLE - Change HR zones and modes in the RhythmSync app. Modes include Heart Rate Only, Running (Cadence + Distance), Cycling (Cadence), Swimming, Heart Rate Variability (HRV)..
  • DURABLE AND PORTABLE EARBUDS: Certified IPX4 rated provides protection from sweat and splashes of water, these Bluetooth earbuds give you wireless freedom of up to 33 feet from your device.
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Scosche Rhythm 24 Heart Rate Monitor Armband and Bluetooth Wireless Earbuds Sport Bundle (Black)

  • HYPER-ACCURATE - Patented optical sensor technology for highly accurate monitoring and measurement. Green + Yellow Optical Sensors Provide superior measurement with all skin tones..
  • WORKS WITH VIRTUALLY ANY DEVICE - Great for use with smartphones, tablets, smart and sport watches, exercise equipment and many other devices that support Bluetooth Smart or ANT+ heart rate data..
  • 24 HOUR BATTERY LIFE - Extended use rechargeable battery allows you to workout for up to 24 continuous hours..
  • CUSTOMIZABLE - Change HR zones and modes in the RhythmSync app. Modes include Heart Rate Only, Running (Cadence + Distance), Cycling (Cadence), Swimming, Heart Rate Variability (HRV)..
  • DURABLE AND PORTABLE EARBUDS: Certified IPX4 rated provides protection from sweat and splashes of water, these Bluetooth earbuds give you wireless freedom of up to 33 feet from your device.
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COOSPO Heart Rate Monitor Armband HW807, Bluetooth 5.0 ANT+ HRM with HR Zone LED Indicator, Tracking Heartbeat HRV for Fitness Training, Work with Peloton/Polar/Wahoo/Strava/Zwift/DDP Yoga

  • ...so can track and capture training zones and calories burned on your smartphone or tablet with compatible training apps..
  • ✅HEART RATE ZONE TRACKING: Coospo heart rate monitor armband HW807 can monitor HR zones with different color LED light, let you see your exercise status more intuitively. Also support heart rate variability (HRV) function..
  • ✅COMPATIBLE with BLUETOOTH5.0 & ANT+: Great for work with smartphones,Garmin, Wahoo sport watches/gps bike computers/fitness equipments and many other devices which support Bluetooth4.0 & ANT connection..
  • ✅RECOMMENDED APP: CooSpo Bluetooth heart rate armband can works well with APP like Wahoo Fitness/Strava/Polar Beat/DDP Yoga/HR monitor/CooSporide and more than 200 APPs..
  • ✅COMPATIBLE with GPS BIKE COMPUTER: With heart rate ANT+ bluetooth function, HW807 armband worked well with Garmin/Wahoo/CooSpo/XOSS and other brand bike computers. Enjoy your riding with coospo armband heart rate monitor..
  • ✅COMPATIBLE with Sports Watches: CooSpo armband heart rate monitor also can works with most BLE / ANT+ sports watches, provide more accurate heart rate data for your training..
  • ✅COMPATIBLE with GYM EQUIPMENTS: HW807 armband heart rate monitor support directly work with Peloton bike, Concept2, Nordic treadmill, Bowflex....
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Scosche Rhythm 24 XL Bundle - Rhythm 24 and XL Replacement Strap - Black

  • NEW STRAP DESIGN: Flexible, Hook Style armband secures Rhythm+2.0 comfortably on biceps, triceps, or upper forearm. Measurements: 40cm max to 17cm min - 15.75in Max to 6.7in Min..
  • XL Strap - Replacement Strap For the Scosche Rhythm 24 and Rhythm+ 2.0 - Waterproof Armband Heart Rate Monitor. Measurements: 26cm max to 15cm min (Not Stretched).
  • HYPER-ACCURATE - Patented optical sensor technology for highly accurate monitoring and measurement. Green + Yellow Optical Sensors Provide superior measurement with all skin tones. Better than monitors and watches that employ only green sensors. On Board Recording allows you to leave your mobile device behind, record workouts and upload data to your device later..
  • WORKS WITH VIRTUALLY ANY DEVICE - Great for use with smartphones, tablets, smart and sport watches, exercise equipment and many other devices that support Bluetooth Smart or ANT+ heart rate data. Works with over 200 of the most popular fitness apps and group training environments..
  • CUSTOMIZABLE - Change HR zones and modes in the RhythmSync app. Modes include Heart Rate Only, Running (Cadence + Distance), Cycling (Cadence), Swimming, Heart Rate Variability (HRV). Multi-Modes include Duathlon (Cycling and Running), Triathlon (Swimming, Cycling, Running)..
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Fitbit Luxe Fitness and Wellness Tracker with Stress Management, Sleep Tracking and 24/7 Heart Rate, Black/Graphite, One Size (S & L Bands Included)

  • See how jewelry gets smart with a tracker that doubles as a timeless accessory and features a vibrant color display.
  • Get better sleep to power your days with sleep tracking and sleep Score in the Fitbit app.
  • Feel a Buzz when you reach your target heart rate zones, while you earn active zone minutes.
  • 6-month trial of Fitbit Premium (New and returning Premium members only. Must activate trial within 60-days of device activation. Requires valid payment method. Cancel before end of trial to avoid recurring fees. Content and features may change. Terms & Conditions apply).
  • Maximize your exercise, understand resting heart rate trends and better estimate calorie burn with 24/7 Heart rate tracking.
  • Tune in to your body with health metrics like breathing rate, heart rate variability and more (in-app only)​.
  • Enjoy up to 5 days of battery without having to stop for a charge (varies with use and other factors).
  • Connect Luxe to your phone’s GPS & see real-time pace and distance on your wrist.
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Mixed Up

  • Optimize your workout routine with a Daily Readiness Score that reveals if you’re ready to exercise or should focus on recovery (Requires Fitbit Premium membership)..
  • Get a daily Stress Management Score showing your body’s response to stress and take steps to improve your levels with an on-wrist EDA sensor mindfulness session. Band Size:Sm: Fits wrist 5.1"- 6.7" . Lrg: Fits wrist 6.7" - 8.3" in circumference.
  • Track your heart health with high & low heart rate notifications and a compatible ECG app (The Fitbit ECG app is available in select countries. Not intended for use by people under 22 years old.).
  • With the Health Metrics dashboard, track SpO2, heart rate variability, skin temperature variation and more (Not intended to diagnose or treat any medical condition and should not be relied on for any medical purposes.).
  • See your real-time pace & distance without your phone using built-in GPS during outdoor activity, then see a map of your workout route in the Fitbit app.
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Fitbit Luxe Fitness and Wellness Tracker with Stress Management, Sleep Tracking and 24/7 Heart Rate, One Size S L Bands Included, Lunar White/Soft Gold Stainless Steel, 1 Count

  • See how jewelry gets smart with a tracker that doubles as a timeless accessory and features a vibrant color display.
  • Get better sleep to power your days with sleep tracking and sleep Score in the Fitbit app.
  • Feel a Buzz when you reach your target heart rate zones, while you earn active zone minutes.
  • 6-month trial of Fitbit Premium (New and returning Premium members only. Must activate trial within 60-days of device activation. Requires valid payment method. Cancel before end of trial to avoid recurring fees. Content and features may change. Terms & Conditions apply).
  • Maximize your exercise, understand resting heart rate trends and better estimate calorie burn with 24/7 Heart rate tracking.
  • Tune in to your body with health metrics like breathing rate, heart rate variability and more (in-app only)​.
  • Enjoy up to 5 days of battery without having to stop for a charge (varies with use and other factors).
  • Connect Luxe to your phone’s GPS & see real-time pace and distance on your wrist.
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Good Hair

  • ... Track your heart health with high & low heart rate notifications and a compatible ECG app (The Fitbit ECG app is available in select countries. Not intended for use by people under 22 years old.).
  • With the Health Metrics dashboard, track SpO2, heart rate variability, skin temperature variation and more (Not intended to diagnose or treat any medical condition and should not be relied on for any medical purposes. It is intended to provide information that can help you manage your well-being).
  • See your real-time pace & distance without your phone using built-in GPS during outdoor activity, then see a map of your workout route in the Fitbit app.
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Yowow BIT Fitness Activity Monitor for Women Men,Health Tracker Watch with Heart Rate,Blood Oxygen,Blood Pressure,Blood Sugar, Sleep Tracking,Body Temperature,HRV,Heart Health Analysis

  • ... and can automatically detect the blood oxygen situation when you sleep at night, record the number of apnea, you can set the low oxygen wake-up in the APP, when the watch detects your blood oxygen is too low and harmful to health, it will vibrate to remind..
  • 【Heart Rate Variability Analysis】A real smart health watch must be able to help you better understand your heart health. This sleep monitoring watch can automatically record your heart rate variability when you sleep at night, the results are recorded in the APP in the form of Lorenz scatter. Turn on the all-day sleep detection in the settings of the watch before going to bed, and then wear the watch to sleep, you will get the analysis results the next day on APP.
  • 【A good assistant in life】This fitness and activity tracker watch can not only help you record your health data, but also a good assistant in your life. It has many functions, such as timer, alarm clock, weather synchronization, information reminder, pedometer and so on. Normally, when you turn on the all-day health check, the battery life of the watch is 1-3 days, and when you turn off the all-day health check, the battery life of the watch ....
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Garmin epix Gen 2 Adventure Touchscreen Health and Wellness Smartwatch with Signature Series Charger

  • ...etter with 24/7 health monitoring. Smart notifications keep you connected to what matters. Train your way with built-in sports apps at the wrist. More satellite coverage means more accurate positioning..
  • See how you’re breathing throughout the day, during sleep and during breathwork and yoga activities. Heart rate variability is used to calculate your stress level score, so you can see if you’re having a calm, balanced or stressful day. Log your daily fluid intake as a reminder to stay hydrated. You can even have an auto goal for hydration that adjusts based on how much you sweat during activities..
  • Access multiple global navigation satellite systems (GPS, GLONASS, Galileo). With the Sapphire editions, get access to multiple frequencies sent by navigation satellites for improved position accuracy in areas where GNSS signals are reflected, weak or typically don't penetrate..
  • View how various settings and sensors impact your watch’s battery life, so you can make battery-extending changes on the fly. Get up to 16 days of battery life in smartwatch mode and 42 hours in GPS mode. Optimize your body’s energy reserves, using heart rate variability, stress, sleep and other data to gauge when you’re ready to be active or when you may need to ....
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Fitbit Charge 5 Advanced Fitness & Health Tracker with Built-in GPS, Stress Management Tools, Sleep Tracking, 24/7 Heart Rate and More, Lunar White/Soft Gold, One Size (S &L Bands Included)

  • See how jewelry gets smart with a tracker that doubles as a timeless accessory and features a vibrant color display.
  • Get better sleep to power your days with sleep tracking and sleep Score in the Fitbit app.
  • Feel a Buzz when you reach your target heart rate zones, while you earn active zone minutes.
  • 6-month trial of Fitbit Premium (New and returning Premium members only. Must activate trial within 60-days of device activation. Requires valid payment method. Cancel before end of trial to avoid recurring fees. Content and features may change. Terms & Conditions apply).
  • Maximize your exercise, understand resting heart rate trends and better estimate calorie burn with 24/7 Heart rate tracking.
  • Tune in to your body with health metrics like breathing rate, heart rate variability and more (in-app only)​.
  • Enjoy up to 5 days of battery without having to stop for a charge (varies with use and other factors).
  • Connect Luxe to your phone’s GPS & see real-time pace and distance on your wrist.
Check Stock