Waterproof flexible Number Pad

Waterproof  flexible Number Pad is made in silicone, environmentally protective, especially for data entry personnel?
Features:

1. Waterproof, washable, portable, dustproof and environmentally protective;
2. Carbon pills keys, very easy and comfortable to strike; No Noise;
3. Roll-able, foldable, save work space and easy to carry;
4. Full size Number Pad 33 keys;
5. Connect to any Laptops;
6. Combo port (USB+PS2)?

Certificate: CE & FCC?

SPECIFICATION
• Compatibility: IBM AT, Windows98/2000/XP
• Communication: PS2, USB, COMBO(USB+PS2) Port
• Color: Black, Blue,Solid White

Layout: 33keys

Electronic data: +5V DC ±% @ 250mA
Total travel: 2mm±4?

Packing Style: Color box(Retail packing)