Blue Mic 360 degree Brand Vibration Resonance Household Mini Music Speaker + FREE Excelvan Card Reader 360 Degree Omni-directional HiFi Sound takes Music everywhere Different surfaces of different materials can produce different great textures of music Support Micro SD card/FM radio;USB access to PC/mobile phone/laptop etc High-grade dazzle color metal texture;Aluminum Alloy raw material;Built-in Li-ion battery, 3.7V, 600mAh Playtime: 2-3 hours / Charge time: 2-3 hours;Power supply: rechargeable Li-ion battery, USB cable, DC 13.5V adaptor.