The Best M4 Smart Band unboxing and test review app smart bracelet your health steward 2020

get it here : https://amzn.to/2TfRPBc Feature of m4 bracelet     IP67 Waterproof (you can wear it to rain, wash hands and take a cold bath, but don't put it into warm water)   Support Multi sports Modes ( Running / Riding / Climbing / Swimming / Pingpong / Walking etc)     Compatible System: BT4.0, for Android4.4 & IOS7.1 or above     Major function: Find equipment, alarm clock reminders, take pictures, drink reminders, gesture intelligence control, do not interfere with the mode, to remind the mode, heart rate automatic detection Specifications m4 bracelet     Screen size： 0.96 inch TFT IPS color screen     Screen resolution:160x80     Bluetooth ：4.0 (low power consumption)     Waterproof index： IP67     Motor:Built in, vibratng reminder     Sensor:G-sensor     chip:BK3431Q     Appearance material top shell: alloy     Strap: Silica Strap     FLASH memory：16M     Strap size：Total length 235MM, adjustable length 155-210MM     Battery type： lithium battery 90mAh     Charging type：USB Charge     Charging time is about 1.5 hours     Normal use time: 10days     Standby time：20days     Control mode：touch button control     Bracelet showing ：international icon     Compatible system: for Android 4.4 and above, for IOS 7.1 and above. Package list:     1x Smart watch     1XUser Manual #smart.bracelet