Jewelry & Watches, Men's Watches, Smart Wristbands

F21 Smart Bracelet GPS Distance Fitness Activity Tracker IP68 Waterproof Blood Pressure Watch Sleep Monitor

Jewelry & Watches, Men's Watches, Smart Wristbands

F21 Smart Bracelet GPS Distance Fitness Activity Tracker IP68 Waterproof Blood Pressure Watch Sleep Monitor

(25 customer reviews)

13 in stock

$27.49 $35.90

F21 Smart Bracelet GPS Distance Fitness Activity Tracker IP68 Waterproof Blood Pressure Watch Sleep Monitor 8
F21 Smart Bracelet GPS Distance Fitness Activity Tracker IP68 Waterproof Blood Pressure Watch Sleep Monitor 9
F21 Smart Bracelet GPS Distance Fitness Activity Tracker IP68 Waterproof Blood Pressure Watch Sleep Monitor 7


1. Heart rate monitoring, blood pressure monitoring, sleep monitoring, sedentary reminder, always pay attention to your health, and give yourself and your family a health guarantee.
2. Support female physiological period function reminder, even if the work is too busy, you are not afraid to forget.
3. Pedometer,Step Traker, distance, calories, stopwatch, countdown, call reminder (caller number/name), message reminder, alarm reminder, anti-lost reminder, sedentary reminder, remote control photo, lift wrist bright screen, etc., Make your life easier. No GPS module, support GPS track query.
4. IP68 deep waterproof, no fear of sweat, rain. It makes you feel at ease when you do exercise.
5. Support multi-language, Bluetooth 4.0


Product model: F21
App operating system: for IOS8.0 or above,for Android4.4 or higher
Gsencor sensor: KXTJ3-1057
Master: nRF 52832
Heart rate sensor: Yiguang PD70-01C-TR7
Vibration reminder: motor vibration reminder
Waterproof rating: IP68
Display: 1.14″ 135*240 resolution TFT
Bluetooth: BLE 4.0
Strap material: silicone strap
Host size: about 47*24*13mm/1.85*0.94*0.51inch
Machine size: about 260*24*13mm/10.24*0.94*0.51inch
Operation: single touch, lift the wrist screen will bright.
Battery: polymer lithium ion battery
Battery capacity: 100 mAh
Standby time: 7-10 days
Charging method: magnetic charging cable
Charging time: about 2 hours
Supported languages: Chinese, English, German, Russian, Japanese, French, Korean, Portuguese, Spanish, Italian, Persian, Vietnamese.

Packing list:

1* smart bracelet
1* charging cable
1* instruction manual

Brand Name



Passometer, Social Media Notifications, Sleep Tracker, Alarm Clock, Push Message, Message Reminder, Heart Rate Tracker, Call Reminder, Fitness Tracker, Blood Pressure, Blood Oxygen

Waterproof Grade

Life Waterproof


All Compatible


Spanish, Italian, French, German, Russian, English, Portuguese

Touch Screen


Screen Type

Color LCD

Band Material


Band Detachable


Case Material



F21 smart bracelet

Application Age Group




Screen Style


Based on 25 reviews

4.9 overall

Add a review

  1. E***r

    Beautiful bracelet. Large screen. Brightness control. Will buy more.

    Color: Red


  2. A***v

    The watch is beautiful, the packaging is not wrinkled. before voronezh went 24 days

    Color: Gray


  3. V***v

    Shipping standard. Corresponds to the description. Nice bracelet for tactility. The screen is not touch, the fingers do not shimmer. You only need to work with a button. The sports mode is activated by long pressing the button and accordingly cancel-long pressing. Pressure measured, normally like showed, but it is necessary to compare with the medical poybor. Vibration is excellent, straight here i like the dead will wake up and notify (joke). Really, vibration is good. The screen is bright. I recommend the seller and the product to whom i’m interested, i also recommend.

    Color: Red


  4. N***a

    Cool bracelet. Nice tactile. Charged through the samsung plug. The application can be found by qr code behind the instructions, there everything is available described. Take it will not regret.

    Color: Red


  5. E***y

    The bracelet was bought for a gift. The main objective was to measure the pressure. With pressure is quite a trouble. And on high and low pressure always shows almost the same value. Batteries last for 3-5 days. Xiaomi mi band i and my wife work longer
    Points removed for the fact that the support for the measurement of pressure is stated, and in fact-it is profanation

    Color: Gray


  6. D***n

    WATCH looks really good quality. First had some issues with connection. One minus – when closing app on phone bluetooth disconnects. Otherwise works really well. Wristband very comfortable and has good feeling on the wrist. Have to mentione – arrived in 10 days, suprisingly quick. Top seller.

    Color: Red


  7. E***v

    Ordered 11.09 came 3.10. Tracked all the way. Ordered as a gift, the packaging is not crumpled. Were charged at 75%. Vibration is excellent! Checked everything shows. The display is bright, the screen is not touch. The quality of the strap is excellent, very soft. No need to disassemble for charging. By qr code downloaded the app, conned in a minute. After the tests i will add a tip. Seller and i recommend the product!

    Color: GREEN


  8. D***n

    Article received clean but little packaged in protection works well except the movement of the wrist which is not excellent but remains passable view are price so I recommend this article

    Color: GREEN


  9. R***i

    Very good and give you the kilometer accurately and there is an alarm to wake you from sleep and a strong battery

    Color: Gray


  10. A***k

    Beautiful, functional, practical, comfortable fitness bracelet. Shows all measurement parameters accurately!!! I bought three pieces, everyone works as it should. Display protects plastic, metal body.

    Color: GREEN


  11. Halaal Market Shopper

    Packing in good condition, arrive in established time, apparently good quality materials, although the buckle was turned upside down, the screen looks good, the operation, in principle, that’s right, it easily attaches to the mobile.

    Color: Red

    Halaal Market Shopper

  12. g***a

    Order packaging in excellent condition and its content equally in excellent condition, it matches the description of the shop. I recommend them to those who are interested, I just need to synchronize it with the phone by others it shows good functioning, because it contains each option described in the Tienda.

    Color: Red


  13. D***v

    Best fitness bracelet! Just!

    Color: Red


  14. R***e


    Color: Gray


  15. J***o

    Just received product. I like it. Not fake! Very accurate from the seller post. I received the product with no problems. Satisfied. Recommended. Thank you.

    Color: Red


  16. D***c

    I got this in 15 days from China to Serbia. Very fast. Looking good. Feels nicer on the skin then the cheap one’s for 5$. Scan the QR code from the box and you’ll find the app and from there you can setup this bracelet. I need to test the rest.

    Color: Red


  17. O***a

    I bought this bracelet because it has blood pressure measurements. Also in the bracelet there are heart rate sensors, sleep, pedometer, distance, stopwatch call message and messages. There is a female calendar, sleep monitoring, alarm clock. In general, there are many things. When the hand moves, the screen lights up. The bracelet is waterproof, but it protects only from rain and moisture, you can not swim in it. Read more about the pressure sensor, because of which I bought this bracelet. To properly measure the pressure, you need a hand with a bracelet to put at the chest level and when measuring the hand should, is in a calm position without movement. I was surprised by the bracelet, which almost correctly measured the pressure and pulse. True when measuring by time when the hand moves the measurement is not true

    Color: Gray


  18. Halaal Market Shopper

    Simple very camfortable and came fast about 2weeks

    Color: Gray

    Halaal Market Shopper

  19. G***z

    He arrived in 10 days. It meets my expectations correctly. It works perfectly and easily to handle. The battery lasts quite a bit. So happy for now.

    Color: Gray


  20. L***r

    Pressure measures approximately, quite often loses communication with the phone.

    Color: Red


  21. Y***a

    The watch ordered on Ali 13.11.19, waited a long time, which was no longer hoped. But everything is fine, the clock came on 26.12.19. The parcel was received in the mail. Packed in a special film, and the watch itself in the box were that in fact does not threaten their deformation during transportation. I waited for them very much, because I really wanted such a watch. As they came and what was, see the photo below. The quality of the strap is very pleasant to the body and to the touch. The watch is very beautiful and bright. Instruction in different languages, but alas neither Russian nor Ukrainian. Tried to connect them through the code, but alas. I decided the question simply, went to The Pley market and downloaded the program manually. Everything is set up automatically, date, time, etc. I still understand them further, but I like the clock very much and I’m delighted with them so far. A little later I will sign for the quality of use)
    I recommend the seller. Thank you very much! P.S. My expectations were worth it

    Color: Red


  22. D***I

    Once again I want to thank the seller for the watch. I recommend who considers a similar bracelet to buy. Everything really works and for a reasonable price tag.

    Color: Red


  23. D***k

    All functions work, delivery is not long.

    Color: Gray


  24. G***v

    Very good communication with the seller. Perfect delivery. Thanks Friends.

    Color: GREEN


  25. T***h

    great seller. fast and quality, delivery 2 weeks

    Color: Gray