Specifications Size: 41x48x12mm Appearance fish technology: stainless steel wire drawing Net weight: 50g CPU: MTK6260A Memory: 128M+64M; support max 32GB TF card Display: 1.54 inch; TFT HD LCD; Resolution ratio: 240x240 pixel Bluetooth: Ver.3.0 Antenna: BluetoothFrequency: GSM 850/900/1800/1900 MHz Single Micro SIM card Battery : 380mAh Features Compatible with android and IOS phonesHands free: built-in speaker and mic,after connect with your smartphone, make/receive calls directly from your wrist Bluetooth companion:sync phonebook and calls,call history,bluetooth dialer & headset remind,push SMS and other notifications:such facebook,twitter and other instant information (Needs to install APP) Note:All functions are available for android smartphone.but for IOS phones,some functions can not be used,please see the description carefully,it does not support SMS synchronization Package Include 1 x Smart Watch 1 x USB Charging Cable 1 x Manual