The Model 4380 stereo headphones/headset is two products in one. It is a wireless headset for use with: cell phones, Skype or other VoIP soft phones, and PC games. It is also a pair of wireless stereo headphones for high-quality music and audio playback from any Bluetooth sound source supporting A2DP (Bluetooth Multimedia Profile). The headset has a built-in, drop-down microphone for use in phone conversations and with PC gaming. Stereo music can be received from a variety of Bluetooth stereo transmission devices, including cell phones supporting Bluetooth pairings of 0000 or 1234 and supporting the Bluetooth A2DP profile, Zoom iHiFi stereo transmitters, and Bluetooth adapters supporting A2DP. Bluetooth profiles supported include: AVRCP, HSP, HFP and A2DP. The Bluetooth radio is Class 2, with a range of approximately 33 feet when paired with another Class 2 device and up to 65 feet when paired with a Class 1 device. The headphones are powered by a rechargeable Lithium Ion battery. The headphones are recharged through the USB port of a PC using the included cable, and will operate for approximately 12 hours between recharges. The headset is a behind-the-neck and over-the-ear style with full-sized ear speakers for high-quality audio playback. The model 4380 is packaged in a blister pack, suitable for hanging.