Features: - Stylish LED, enjoy the light with music - High-quality 5W speaker for superior bass performance - Built-in lithium battery provides around 4hrs continuous playback - Supports Micro SD / USB / Line-in / FM modes - Built-in microphone supports hands-free call function - Output power: 5W - Frequency response: 60 ~ 20kHz - Speaker Sensitivity: ? 80dB - Working distance: ± 10m - Battery: 3.7V 600mAh - Input Voltage: 5V - Input current: 1A - Playback time: ± 4hrs (50% Volume) - Charging time: 2hrs - Support mode: TF card, USB, FM, AUX - Colour: Black What's in the box 1 x HM-BT161BT Speaker, 1 x USB charging cable, 1 x User manual What's in the box 1 x HM-BT161BT Speaker 1 x USB charging cable 1 x User manual