A True Review posted a review on the Bluetooth Headphones and Audio Adapters from ever-E

There are many reasons why Bluetooth is a good choice as a medium for wireless stereo headphones. The Advanced Audio Distribution Profile (A2DP) of which Bluetooth wireless headphones use, delivers surprisingly good audio quality. The roaming range of Bluetooth headphones from a transmitter is good (up to ~20 ft). Perhaps most importantly, because Bluetooth technology has already achieved global acceptance, compatibility between varying adapters and headphones is fairly high. The latter reason is particularly important because it allows the possibility of portable media player manufacturers to incorporate Bluetooth into their devices; therefore, they can connect to any Bluetooth headphones sans an additional external adapter. Such devices are already in the market. Almost all of the latest cell phones that support Bluetooth as well as media playback (smartphone or not), can be paired with Bluetooth headphones for high fidelity wire-free music enjoyment.

Bluetooth Headphones and Audio Adapters from ever-E