50 pcs 2.5mm to 3.5mm earphone jack adaptor wholesale lot, only $0.8/pc
2.5mm to 3.5mm earphone adaptor enables you to use your favorite 3.5mm standard headset or even a speaker to get full stereo sound for listening to MP3s with your 2.5mm PDA handheld/Cell Phone.
Compatible for: PalmOne Treo 600, 650
Sony Ericsson P800, P900, P910i
HP iPAQ h2210, h1910, h1940, h1945
Motorola MPX200 MPX220
Nokia 5510, 6600, 3650, 3660, 7650
Dopod 515, 535, 565, 575, 585, 686, 818, 828
Not compatible with Samsung cell phones
For some phones, it will only give sounds on one side, not both side, depends on your phone model.