Ruiling 2-Pack 3.5mm Male to 2.5mm Female Stereo Headset Adaptor For Apple iPhone HTC Nokia and Other Phone Models audio devices (This will allow you to use your 2.5mm headset with a device that has 3.5mm).
3.5mm To 2.5mm Female Headset Adaptor for you to use your 2.5mm headset with your 3.5mm jack devices, like cell phones, MP3 players and Apple Ipods. Make use of your current 2.5mm headset to listen to music on your music players, cell phones with 3.5mm jack and other devices.