Mini Speaker 3,5mm Jack AUX Music Player for Phone Notebook, Red Description: Mini Portable Speaker 3,5mm Music Audio Player Sound Box For Phone Notebook Laptop Tablet Four times louder speaker, increases the voice of mobile phone and tablet. Built-in lithium battery, when playing does not consume the power of the mobile phone at all. The small hull can be easily carried in the bag. Suitable for mobile phones, MP3, computers, game consoles. Specification: Power: 3.7V 350mAh Charging: DC 5 V 500 mA Output Power: 3W Output Impedance: 4 ohms Frequency Response: 50 Hz-18 kHz Relationship to noise: 80dB THDN:3% Speaker Size: 1,4 inch Battery: 350 mAh lithium battery (built-in) Size: 46x46x33mm/1,81x1,81x1,29'' Weight: about 150g Applicable products: mobile phones, MP3, computers, game consoles. The package includes: 1-piece mini speaker 1 piece USB cable