... : 1, built-in Bluetooth wireless module, the latest Bluetooth 2.1 + EDR standard2, support for Bluetooth stereo, excellent sound quality ... iPhone, iPad, and all mobile phone supports Bluetooth stereo function5, Bluetooth hands-free function, built-in high-fidelity ... Nominal Impedance: 4 ohms; rated power: 3W Technical parameters:Bluetooth specification: 2.1 + EDRBluetooth File: A2DP AVRCPSpeaker unit ...