Main Features:Water resistant / anti-dust / anti-scratch / shockproof design, suitable for both indoor and outdoor exerciseBuilt-in AUX external audio input, support all digital audio device with 3.5mm jack, such as iPod / iPhone / iPad / cell phone / MP3 / MP4 / PC / notebook / PSP Built-in Microphone, convenient to useEnjoy hands-free phone calls and music in the car, making your driving or trip more elegant and saferBuilt-in rechargeable lithium battery, extend the playing time for outdoor use Simple and easy to operation Model: DC-932 Design: Cool,Portable,Stylish,Fun,Mini Compatible with: Tablet PC,MP4,MP3,PC,Mobile phone,iPod,iPhone,MP5,PSP,Laptop Supports: Bluetooth,Microphone,Water Resistant,Hands-free Calls,Volume Control,TF Card Music Playing,Loudspeaker,Waterproof Functions: Stereo,AUX Function,Songs Track Connection: Wireless,Wired Interface: Micro USB,3.5mm Audio Audio Source: Electronic Products with 3.5mm Plug,Electronic Products with USB port,Bluetooth Enabled Devices Speaker Impedance: 4 ohm Color: Green Bluetooth Version: V3.0+EDR Transmission Distance: W/O obstacles 10m Driver unit: 40mm Power Output: 3W Support O.S: Windows XP,Windows 7,Windows Vista,Mac OS,Windows 2000 Power Source: USB,Battery Charging Voltage: DC 5V Battery Capacity: 800mA Charging Time: 2 - 3hours Lasting Time: 4 - 6hours Product weight: 0.370 kg Package weight: 0.450 kg Product size (L x W x H): 20.0 x 6.8 x 5.7 cm / 7.8 x 2.7 x 2.2 inches Package size (L x W x H): 21.0 x 8.5 x 7.5 cm