The price is for per piece. The more you order, the better price you will get. Please E-mail Us. Features: The 2.5mm to 3.5mm adaptor allows you to easily use normal 3.5mm headphones with the range of PDA and phone devices. Once inserted into the units 2.5mm headphone socket you can easily plug in your favourite standard 3.5mm jack audio headphones. Perfect replacement for the original cable adapter. Light Weight, compact, stylish, convenience. Perfect for MP3s, games, CD-players and all other audio devices. Perfect for road warriors, home, and office users. Try it once, you will surely like it. It will be your best choice.