Egg Silver 360 Degree Brand Vibration Resonance Household Mini Music Speaker Support TF Card for MP3 PC Phones iphone iPad iPod Playtime: 2-3 hours / Charge time: 2-3 hours Aluminum Alloy raw materialBuilt-in Li-ion battery, 3.7V, 600mAhRMS 3W Power supply: rechargeable Li-ion battery, USB cable, DC 13.5V adaptor Support Micro SD card/FM radio; USB access to PC/mobile phone/laptop etc Audio Source: PC, MP3, MP4, Micro SD, CDDVD player, Mobile Phones, iPhone, iPad, iPod and other audio players with standard 3.5mm audio jacks.