Enjoy flexible Bluetooth wireless connectivity with your existing wired Sennheiser HD205 or HD215 headphones. This Bluetooth receiver adds Bluetooth capability to your existing headphones. Just plug your headphone's 3.5mm jack into the Bluetooth receiver adapter and "pair" with your device (iphone, ipod, ipad, laptop etc.). Alternatively, on the HD215 use the included 3.5mm jack to connect to the 3.5mm socket on the Sennheiser HD215 headphones. This feature is particularly helpful if you are upgrading to iphone 7, 8 or X with no 3.5mm headphone output.

Typical use of 2hrs 30min between charges. 

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