US Compass Bluetooth Smart Watch WristWatch U8 UWatch Fit for Smartphones IOS Android Apple iphone 4/4S/5/5S/6 Android Samsung S2/S3/S4/Note 2/Note 3 HTC Sony Blackberry This is a new Bluetooth Smart U Watch compatible with all Bluetooth V2.0 or above enabled smartphones, tablets and PCs,such as Iphone/Samsung/LG/HTC etc. Talk Time 3 hours,Standy-by time about 160 hours,Built-in 230mAh rechargeable battery,Two-year warranty 1.48" Capacitive Touch Screen TFT LCD + Bluetooth V3.0+EDR, Transmitting Range 10m Functions as below:Bluetooth phone function, Bluetooth message push,Bluetooth Music Player,step counter,Calories,long-distance capture,sleep monitor,Multiple languages,anti-theft,etc. Ring reminder when your smart phone receive a message Including Facebook, Twitter, WhatsApp, Skype and so on.(Only for android phone.)