In terms of stereo music to the new Nokia the new Bluetooth stereo headset BH - 504, including been announced. Mobile devices, BH - 504 Bluetooth headset users active, always in music without the trouble of wiring needed to connect users with the best. These new stereo Bluetooth wireless devices, and feature audio echo and noise cancellation provides for a conversation in a loud voice from the fold. BH - 504 music playback, talk and 3.75 days in standby mode (90 hours) for nine hours to 7.5 hours. In addition, cable, headphones, as a call for the use of music can be heard more in the style of WH - 500, the ear WH -800 and WH -202 Earphones.