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B57 Smart watches | etrolleys.com
B57 Smart watches | etrolleys.com
B57 Smart watches | etrolleys.com
B57 Smart watches | etrolleys.com

Smart watches, Waterproof, Sports

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1. Product model: B57 smart bracelet
2. Chip: NRF52832
3. Bluetooth: BT4.0
4. Compatible system: Android 4.4 and above, IOS 9.0 or above
5. Waterproof rating: IP67
6. Screen: 1.3 inch IPS color Resolution: 240*240
7. Touch: Single touch
8. Battery: 180 mAh
9. Charging: Magnetic charging
10. Charging time: about 1.5H
11. Standby: 25 days or so Working time: 7 days or so
12. Bracelet material: PC case + plastic case
13. Product size: about 48.9*34.5*11.7mm/1.92*1.35*0.46in
14. APP support languages: Ukrainian, Russian, German, Italian, Japanese, French, Simplified Chinese, Traditional Chinese, English, Portuguese, 

1. Bracelet display function: time display, battery icon display, date display, week display, standard motion function (step, distance, calorie) multi-sport mode (walking, running, cycling, skipping, badminton, basketball) , football, swimming), heart rate, blood pressure detection, blood oxygen detection, sleep time display, screen brightness adjustment, music control.

2. Reminder function: incoming call, SMS, QQ, WeChat reminder (display content and name). Facebook, Whatsapp, Twitter, Skype, and other social software reminders, alarm clocks (three sets of alarm clocks), sedentary reminders.

3. Other functions: intelligent anti-lost, remote control photography, do not disturb mode, raise hand to bright screen, time format setting, factory reset, long press to reject incoming calls, three clock interface selection, music control (support previous song, next song, play/pause), weather display, for apple health, etc.

Pls Note:


1. after receive the watch ,please charging first.Because after a long period of logistics, the watch has a low battery

2. Do not use the smart bracelet in sea water, hot water or warm water! 

3. Don't wear this device when bathing or swimming for a long time.

4.Wearable devices monitors human activities through electronic sensors,and they are at the consumer electronics level.It's normal for certain deviation.The user should treat data objectively.

5.Please do not compared to hospital equipment about reading,it is NOT a medical device !please don't buy for check the health(heart problem, blood pressure problem) it's not for professional use.Just can be a reference.


Packing List:
1* Bracelet
1* Instruction Manual
1* Charging Cable




Language: English
Language: Russian
Language: Spanish
Language: Portuguese
Language: Italian
Language: French
Language: German
Language: Japanese
RAM: <128MB
Network Mode: None
SIM Card Available: No
Mechanism: No
System: ios
System: Android OS
Compatibility: All Compatible
Multiple Dials: No
ROM: <128MB
Type: On Wrist
Function: Passometer
Function: Sleep Tracker
Function: Heart Rate Tracker
Function: Remote Control
Function: Message Reminder
Function: Call Reminder
Camera: None
Waterproof Grade: Life Waterproof
Battery Capacity: 180-220mAh
Screen Shape: Square
Case Material: Plastic
Band Material: Silica Gel
CPU Manufacturer: MediaTek
APP Download Available: No
Band Detachable: Yes
Resolution: 240*240
Application Age Group: Adult
CPU Model: none
Display Size: 1.3 color LCD
Battery Detachable: No
Movement Type: Electronic
Style: Fashion
Bluetooth version: Bluetooth 4.0
System requirement: Android 4.4 and above, for ios 9.0 or more
Waterproof rating: IP67
Blood pressure: Support
Color: black/White/Pink

The Smart watches, Waterproof, Sports is the yin, to your yang. You've found what you're looking for.

Inventory Last Updated: Feb 25, 2020

Customer Reviews

Based on 13 reviews

Excellent product. Bracelet excellent quality, hardware smartwatch exceeded expectations, and the application of interaction in cell very cool, can view the graphic health (steps, drills, BPM, pressure), Trace goals, change dial design. After synchronization between watch and mobile, verify the Notifications messages by the clock. Finally, Very satisfied with the purchase!


Great watch, very worth the price, met all my expectations, arrived in 20 days, well packed. Brazilian buy without fear, very easy to set up by app…


Super product according to this money, also bought very fast delivery This price is absolutely very good for


All right, fast shipping, works according to expectation.


Everything works well. Keeps the charge a week for sure. Configure them so: in the instructions there is a QR code turn on the camera point to this code and automatically appears the program that tie the clock to the phone.