Brand CHEERLINK Model QT-09 Quantity 1 Color Black + red Bluetooth Version V2.1 Operating Range 8 meter Compatibility V2.0 Microphone Yes Supports Music Format WMA / WAV / MP3 Power Supply Built-in Battery input voltage 110~210V Built-in Battery Capacity 350mAh standby time is 36 hours Compatible With Iphone Android Bluetooth phone Other Features Screen size: 1 inch; Incoming call / SMS vibration alert supports voice call and can be used as Bluetooth speaker BQB Certification No Packing List 1 x Bluetooth bracelet 1 x USB cable (70cm) 1 x English manual