Wireless portable speaker, Anti-clipping function for loud, distortion free music, Wireless music streaming via Bluetooth, Built-in microphone for hands-free phone calls,Built-in rechargeable battery, Sound: Output power (RMS): 2W, Sound System: Mono, Loudspeakers driver: 1 x 1.75", Compatibility: iPad: iPad 1, iPad 2, new iPad, iPad mini, iPad with Retina display, iPhone: iPhone 3, iPhone 3GS, iPhone 4, iPhone 4S, iPhone 5, iPhone 5C, iPhone 5S, iPod touch: 3rd generation or later, Android tablets & smartphones: with Android 2.1 and Bluetooth 2.1 or above, Work with: Bluetooth 4.0 or below, Other Bluetooth-enabled device, Connectivity: Bluetooth profiles: A2DP, AVRCP, HFP, HSP, Bluetooth range: Line of sight, 10m, Audio in (3.5mm, Built-in microphone: for speaker conference, Included accessories: carrying strap, USB cable for PC charging, Power: Battery type: lithium polymer (built-in, Operating time on battery: 8 hr, Product dimensions (WxDxH): 55 x 55 x 55 mm, Product weight: 0.12 kg