Description Would you like to enjoy an auditory feast with your mobile phone or computer? Then you can look at our product. Mini size and plug and play design make it easy and convenient to use. It can amplifier the sound from the phone or computer. So you can enjoy the music or movie. Features - Color:Black. - Material:Plastic, electronic components. - Universal 3.5MM jack, compatible with more than 95% of mobile phones on the market. - USB charging, built-in lithium battery, without losing mobile phone power. - Mini, compact and portable, convenient for different occasions use. - Stereo bass, high-fidelity sound, long battery life. - Integrated buttons, easy to use, plug and play. Specification: Speaker power: 3.7V 350mAh. Output power: 3W. Frequency response: 50-18000HZ. THD+N: 3%. Plug specifications: 3.5mm. Charging voltage: DC5V 500mA. Output impedance: 40HM. Signal to noise ratio: >80dB. Speaker size: 1.4 inches.Package list: 1 x loudspeaker