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

198 % of buyers enjoyed this product!
Availability: in stock
Color: Green Red gray
Ships From: China United States
Price:  US $25.81
Sale Price:  US $20.65
from AliExpress
45 days Money back 45 days Money back Returns accepted if product not as described, buyer pays return shipping; or keep the product & agree refund with seller.
On-time Delivery On-time Delivery
Guarantees: On-time Delivery 60 days


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.

Support female physiological period function reminder, even if the work is too busy, you are not afraid to forget.

3. Pedometer,Step Traker,
, calories,
, 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.

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


Shipping Company Shipping Cost Estimated Delivery Time
DHL 3 - 7 days
UPS Expedited 3 - 7 days
EMS 5 - 14 days
Post Air Mail Free Shipping 15 - 45 days
Return Policy If the product you receive is not as described or low quality, the seller promises that you may return it before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe) and receive a full refund. The return shipping fee will be paid by you. Or, you can choose to keep the product and agree the refund amount directly with the seller.

N.B.: If the seller provides the "Longer Protection" service on this product, you may ask for refund up to 15 days after order completion.
Seller Service On-time DeliveryIf you do not receive your purchase within 60 days, you can ask for a full refund before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe).

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Price:  US $25.81
Sale Price:  US $20.65
from AliExpress