Speaker 2x 4" 20W Battery LED Effects Bluetooth/SD/USB/Radio LiGE-A48 General characteristics 2x 4" speakers USB input TF (MicroSD) input AUX input (3.5mm jack) MIC input (6.35mm jack) FM radio LED lights Button functions in audio playback: PLAY/PAUSE, PREV, NEXT Mode switch button: AUX, USB, TF, Bluetooth, Radio     Technical features Dimensions: 175x160x390mm Output power (RMS): 2x 10W Frequency Response: 100Hz-20KHz Impedance: 4 ohms S/N: ≥70dB 1200mAh lithium battery     Box contents Speaker 2x 4" 20W Battery LED Effects Bluetooth/SD/USB/Radio LiGE-A48 Infrared remote control 3.5mm jack to 3.5mm jack AUX cable USB-MicroUSB charging cable Instructions in English