Material: ABS+PVC Customized colors and logos are welcomedRed,Blue,Silver,BlackSupports A2DP and AVRCP with Bluetooth version 2.1/2.0/1.2 with EDR class IIportable, no extra battery operated stereo audio systemDemension: 61*61MMCompatible with iPad/iPhone, other smart phones and tabletsHands-free talking when call comes inWireless transmission: 10 metersBuilt-in rechargeable Li-ion BatteryMicro USB charging cable Loudspeaker output: 3WNoise suppression and echo elimination (2nd generation CVC)Built-in anti-noise microphoneMicro SD card music playing