ZPS Portable Outdoor Sports Waterproof Shockproof Wireless Bluetooth Stereo Speaker Stable triangle shape structure, exquisite and attactive metal grid,A2DP stereo Bluetooth transmission 4W strong output power with outstanding sound quality,Saves you from the hassle of tangled wires Waterproof, Dustproof Anti-scratch, Shockproof, suitable for both indoor and outdoor exercise,1500mA high capacity built-in rechargeable battery Playtime lasts for 5 hours at least Aux in function,Support all digital audio device with 3.5mm jack, such as iPod / iPhone /ipad, MP3, Computer, Notebook, PSP... The Bluetooth chip Bluetooth speaker with OVC, masking under no circumstances point to a large 10 m transmission,Bluetooth technology, computer use, get rid of the shackles of cable, ultra-high quality music playback