P47 4.1+EDR WIRELESS HEADPHONE Driver Unit:Bluetooth Support: 4.1 version & downwards BT Scope of work: 10 meters USB Charging cable:AC input 110-220VDC input 5v Talk Time: 6 Hours Output Frequency: Class2 Noise reduction technologyDPS Digital signal processing Supports automatic switch over to incoming calls Last dialed number dialing function Compatible with RoHS standards.Package Contains: 1 x Headphone 1 x USB Charging cable 1 x 3.5mm audio jack