Bluetooth speaker with alarm clock function $ 29.90 Type: Bluetooth speaker Connection method: Bluetooth connection Interface type: USB Operation mode: button Shell material: plastic Amplifier output power: 3W+3W, 2.0 stereo speakers Frequency response: 100-20KHz Speaker: 4 ohm 3 watt2PCS Signal to noise ratio: FM 40dB Bluetooth 70dB AUX input 70dB Power input: AC input 100-240V /50-60Hz, DC output 5V/2A transformer Clock backup power supply: Built-in a 3V/150mA button battery. Product size: (L)110mm(W)110mm*(H)64mm
