Description: Compatible: All mobile phones with Bluetooth function. Shell Material: Plasic. Screen Type: OLCD,touch screen. Display Size: 0.49 Inch. Card Extend: No. NFC: Support. Data transfer: USB/Bluetooth. Charge: USB Charge. INPUT: Micro USB. Language: English, Simplified/Traditional Chinese. Message: SMS. Built-in Battery: Polymer li-ion battery,130mAh. Stanby time: about 150h. Charging time: about 2-3h. Bluetooth Version: Bluetooth3.0 (standard). Wristband Dimensions: About18 mm. Dial Dimensions: 54 x 29 x 13 mm. Net Weight(Including battery): 40.2 g. Sensing Range: 5-10 M (exceed 5-10m,this devices would disconnect). Features: synchronize music ,phone book,message. Anti-lost: When your phone is out of range of the Bluetooth bracelet (10 meters), the watch phone will vibrate to remind you pay attention to your cell phone in case of loss. You can directly call, answer or reject a call by using the watch phone, simple and convenient. After a Bluetooth connection with your phone, if you have an incoming call, it will display the caller ID and vibrate to remind answer the call. supports multipoint connection, support two phones connect to the watch phone at the same time. (or two support Bluetooth function devices connection at the same time) Others Functions: waterproof,alarm,vibration,Bluetooth,WiFi,calendar,calls notify,music,receive SMS,SleepAnalysis,weather,motion sensor,pedometer function,etc. Package includes: 1 x watch phone. 1 x Cable. 1 x Holder. 1 x Manual