Specification: Support Voltage: 220V12V/24V Bluetooth Call: not supported FM Radio: support Channel: Mono stereo USB: Support Remote Control: support Bluetooth Version: 4.2 Bluetooth Music: support Microphone: support TF/SD: Support Bass Adjustment: support Material: Plastic Size: app.14x8.5x7.8cm/5.51x3.35x3.07in Color: Black Quantity: 1 Set