Youmoon Portable Mini Bluetooth Speaker Ym370 Ultra-thin Square Box + Microphone with 8 Hour Playtime Including AUX and a Micro Sd-card Slot High-def Sound Aluminum Shell (White) Full, High-Def Sound: Enjoy an impressively full sound quality and robust bass realized through a 5W audio driver and passive subwoofer. Perfect sound quality and effect, when you go out to enjoy unfettered music anywhere stereo Bluetooth transmission.with up to 33ft/ 10m bluetooth signal, more than enough for bedroom, bathroom, lounge or kitchen. Built-in 1200mAh rechargeable Lithium Ion battery offers up to 8 hours of play time. Built-in high sensitivity Microphone, hand-free telephone calls. Waterproof IP65, Dustproof, Anti-scratch, Shockproof,Rechargeable, suitable for both indoor and outdoor exercise. Support SD play MP3, WMA in the tray music files(the Micro SD card does not include in the package). Aux in function support all digital audio device with 3.5mm jack, such as iPod/iPhone/ipad,Cell phone,MP3, MP4,Computer, Notebook, PSP.