F21 Bluetooth Heart Rate Blood Pressure Sleep Monitor Waterproof Fitness Activity Tracker Smart Sports Bracelet Watch – Black & Green


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This F21 Bluetooth Fitness Activity Tracker Smart Sports Bracelet is perfect for you. Health monitoring function of blood pressure, heart rate and sleep quality. Fitness tracking of distance, calories and steps, providing a convenient way to your daily exercise measurement. Other functions including call reminder, message reminder, alarm clock, anti-lost reminder, sedentary reminder, female physiological reminder, remote photo, etc. Long-term wearing can continuously collect and accumulate blood pressure data, which provides valuable reference for judging physical conditions. Daily life waterproof, swimming can also wear. Support cold water (hand washing, bathing, snorkeling) to effectively eliminate the corrosion of cosmetics and daily articles, sweat, etc. Pick one.

  • Activity tracker, record your daily activity: steps, distance, time, calories. Check and share your data anytime.
  • Sedentary reminder, set it to remind you to walk or exercise after a long time sit.
  • Sleep monitor, check sleep trend chart to view your sleep time and quality.
  • Heart rate monitor and blood pressure monitor.
  • Bluetooth synchronization.
  • Remote camera, take photos by phone through remote control of the wristband.
  • When the Bluetooth is disconnected or the phone is out of the Bluetooth distance, the watch will alert you.
  • Anti-lost, the wristband will remind you with vibration when your phone is 5m away from you.
  • Data synchronization does not require cable.
  • SMS, information, call reminders.
  • Support female physiological period function reminder, even if the work is too busy, you are not afraid to forget.
  • IP68 Waterproof, smart bracelet from water: Daily life waterproof, supporting cold water resistant like wash hands, have a bath or swimming.
  • 14" large TFT screen with colored display and touch operation, more colorful, more delicate display, give you the most comfortable experience.
  • Supported Language: Chinese Simplified, Chinese Traditional, English, German, Russian, Japanese, French, Korean, Portuguese, Spanish, Italian, Persian, Vietnamese.

Basic Specs
Model No. F21 Heart Rate Smart Bracelet
App OS IOS 8.0 & above, Android 4.4 & above
Main Function Heart Rate Monitoring, Blood Pressure, Step, Distance, Calories, Sleep Monitoring, Stopwatch, Countdown, Call Alert (call/name), Information Alert, Alarm Clock Alert, Anti-loss Alert, Sedentary Alert, Female Physiological Function Alert, Remote Control Photo Shoot, Raised Wrist Screen, etc.
Sensor KXTJ2-1009
CPU Chip nRF52832
HR Sensor PD70-01C-TR7
Vibration YES
Waterproof IP68
Supported Language Chinese Simplified, Chinese Traditional, English, German, Russian, Japanese, French, Korean, Portuguese, Spanish, Italian, Persian, Vietnamese
Size 1.14" 135*240 dpi
Type TFT
Bluetooth BLE 4.0
Other Specs
Strap Material Silicon
Host Dimension 47*24*13mm
Strap Dimension 260*24*13mm
Net Weight About 28g
Color Black & Green
Operation Single Point Touch Key, Wrist Senses
Battery Li-polymer Battery
Capacity 100 mAh
Standby Time 7-10 days
Charging Magnetic Suction Charge Cable
Charging Time About 2 Hour

Package Includes
  • 1 x Smart Bracelet
  • 1 x Charging Cable

Extra Info