Features:
1) Waterproof, washable, portable, dustproof and environmentally friendly
2) Carbon pills keys, very easy and comfortable to strike, no noise
3) Rollable, foldable, save work space and easy to carry
4) 33-key full size number pad
5) Compatibility: IBM AT, Windows 98 / 2000 / XP
6) Communication: PS2, USB, COMBO(USB+PS2) port
7) Colors: black, blue, solid white
8) Layout: 33 keys
9) Electronic data: +5V DC ± % @ 250mA
10) Total travel: 2mm±4
　
Inner packing:
Color box (retail packing)