Compatible with Apple IPAD,MAC book,MAC AIR. Iphone3.3GS,4G,4S,PC(need Bluetooth dongle). The max transmission range of class ii is 10 meters while the max transmission range of class I can reach up to 100 meters. The product is a stereo Bluetooth speaker It supports the following Bluetooth profiles: A2DP- Advanced Audio distribution Profile AVRCP- Audio/Video Remote Control Profile Pairing with the Bluetooth mobile phone and PDA which support HFP. -Pairing with Bluetooth music devices and Bluetooth transmitter which support A2DP. -Easy to switch between conversation and music, you will not miss the incoming call during. -Automatic connecting with the last paired device when turn on the Speaker -Charging the battery with USB cable Bluetooth Version: V3.0+EDR Bluetooth Profiles: Headset, Hands-free, A2DP, AVRCP Effective Range: 10 Meters Working Times: Music: Up to 9 hours; Talk: Up to 10 hours. Stand by Time: Up to 250 hours Input: DC:5V Charging time: About 2.5 hours Dimensions: 65*45mm