Quantity 1 Color Golden + black Bluetooth Version Bluetooth v3.0 + EDR Operating Range 20 meter Compatibility A2DP Microphone No Radio N/A Supports Music Format N/A Power Supply Built-in Battery Built-in Battery Capacity 300mAh Compatible With Iphone / Ipad and other cell phone and tablet PC with Bluetooth function Other Features Frequency: 2.4GHz; ISM band; Working channel: 79; Earphone frequency: 20Hz~20kHz; Play time: 12 hours; Standby time: 330 hours; Charging time: 2 hours; Interface: 1 x Power port 1 x Mini USB port 1 x 3.5mm jack.. Packing List 1 x Bluetooth audio receiver 1 x 2-flat-pin plug power adapter (100~240V) 1 x Charging cable (99cm) 1 x Audio cable (120cm) 1 x Chinese / English user manual