Reproductor bluetooth aluminio de lineas elegante y de gran calidad Amplifer: Digital Amplifer, Speaker: Full range F45mm 2O, Size: L 64.5 x W 64.5 x H 70.1mm, Technical Parameters, RMS: 5W, Bluetooth chipset: RDA+ANYKA, Bluetooth version: V2.1+EDR, Supported protocol and profle: A2DP, AVRCP, HFE, HFP, Working current: Max=350mA. Working voltage: 3.3V-4.2V, DC output: DC 5V, Battery: Built-in 500mAh battery Play / Pause button. In Bluetooth mode, short press is for Pause. The button is invalid in the AUX-in mode. Previous track button. In Bluetooth mode, short press is for, previous track, long press is for increasing volume, Note: the button is , invalid in the AUX-in mode. Next track. In Bluetooth mode, short press is for next track, long press is for decreasing volume, the button is invalid in the AUX mode. Microphone hole. Bluetooth disconnect button and Answer/Reject call. In Bluetooth mode, press and hold for 3 seconds to disconnect Bluetooth. In Bluetooth mode, short press for 1 second to answer the call, and long press for 3 seconds for rejecting call. In AUX-in mode, All keys are invalid. Unplug the AUX-in cable, it will switch to Bluetooth pairing mode automatically. Micro USB port is for connecting to DC 5V USB cable, to charge, the Bluetooth speaker. Please take note that power adaptor is not, standard accessory of Bluetooth speaker. You can use your mobile phone adaptor to charge the speaker or connect to USB port of your PC / power bank to charge the device. The limited voltage is 5V. AUX-in jack. Connect the with your pc, MP3/mp4 player, Tablet, Mobile and other playback devices with 3.5mm jack by audio cable, and will disconnect the Bluetooth automatically. Charging indicator. Red indicator lighted when charging, and of after fully charged.