U watch 2s
Bluetooth Version : V3.0 Class3                            
Screen:  OLED
Distance: 5-20meter
HZ: 2.4GHz Spectrum
charging time  2hours
use time : Max 100hours

Main function: Bluetooth
1.Ringtones tips
2.Music playback
3.Sync phone book(max1500contacts)
4.Supports dial/answer/reject phone call
5.Sync SMS(supports android smartphone only)
6.Anti-lost:vibration&ringing
7.volume control
8color black white red yellow