This is a new Bluetooth Smart U Watch U8 which is compatible with all Bluetooth V2.0 or above enabled smartphones, tablets and PCs (support Android 2.3 or above),such as iPhone 4, 4S, 5, 5S, Sumsung S3, S4, Note 2, Note 3, Note 4 etc.

Specifications:
Ambient Noise: 75dB
Transmitting Range: 10m
Talk Time: about 3 hours
Charging Time: about 1 hour
Music Play Time: about 6 hours
Standby Time: about 160 hours
Bluetooth Version: Bluetooth V3.0+EDR
Range of Frequency: 2.4GHz spectrum
Language Support: English, Chinese
Bluetooth Protocol: A2DP + HFP 1.5 + HS P 1.2
Power Supply: Built-in 230mAh rechargeable battery

Features:
Stopwatch function
Support hands-free calls
Material: Steel + Silicon
Answer or Dial calls from your wrist
1.48" Capacitive Touch Screen TFT LCD
Time / Date / Week / Battery state display
Ringing reminder when you receive a call
Display the number or name of incoming calls
Play the music in your phone (after Bluetooth paring)
Dial Size: 4.6 × 4.2 × 1cm / 1.81 × 1.65 × 0.39 inch
Ringing reminder once your mobile phone disconnected
Sync phone book/SMS/call history(only for android phone)
Altitude Meter,Passometer,,Photograph,Barometer,Vibration
Remote taking photo function:You can control your cellphone to take photo from your wrist.
Ring reminder when your Android 2.3 or above smart phone receive a message (including Wechat, Facebook, Twitter,WhatsApp, Skype,and so on)
Anti-lost alarm function: When cellphone left watch alarm automatically, after a certain distance to avoid lose the phones

Colors:Red/White/Black

Package included:
1 x Bluetooth Watch
1 X charger
1 X usb cable
1 x User Manual

Android System can support all function in the description; BUT ISO only support: Passometer, Calendar, Call Sync,Calculator,Clock,Stopwatch.