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M4 Waterproof Bluetooth Smart Bracelet

This is the classic M4 Smart Wristband Band 4.
There are thousands of variants of this watch on the market, this one that I present to you is reliable and enduring.
It gives you confidence that you will get the Smart Wristband you need.

Features
Device Model: M4
Bluetooth: 4.0
Battery: 90mA Li-ion polymer
Charging time: 2 hours use time: about 7 days
Standby time: About 15 days
Water resistant: IP67. Protection total against dust (6) and can be submerged in water up to a maximum of one meter (7).
Compatible System: For iOS8.0 and above, for Android 4.4 and above
Synchronization range: 3m (theoretical range is 10m without interference)
Screen: Full touch
Control Mode: Button Switch
Data storage: Records 7 days of detailed exercise data
Battery type: Polymer lithium battery
Charging method: USB charging cable
Screen size: 0.96 inches
Screen type: TFT
Connection parameters: Bluetooth 4.0 low power sync
Other parameters: TPU material appearance
Product net weight: 22g
Product Colors: Black, Blue, Red

Main functions
Heart rate monitoring, Step counter, calorie burn, distance, RTC display, automatic sleep monitoring, call reminder, information prompt, alarm reminder, anti-lost, remote control, etc.
Language
Spanish
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