1.Material Made in silicone, environmentally protective and ideal for resistance against drink or food spillage at home or at work pact The ability to roll up the keyboard makes it one of the most space saving computer peripherals on the market today. 3.Keyboard Colorfast Printing;The letters won't come off even after long periods of time. No noise while typing Harmless to the human body with excellent softness Portable with the proper size to fold or roll Resistance to the water or dust Easy to work for its round shape design Excellent and various in colors Long durability (one million life cycle of key) 4.Special Application, Special use Hospital ;Office ; Factory; Laboratory ; Library ; Military ;Automotive industry ; Garage ; Workshop; Mining & Quarrying; Classroom; Restaurants and kitchens; Kids room; Laptop users; The keyboard is soft to the touch with silent keys, this feature could be useful in such places as: Libraries Offices Cybercafes Hospital wards Boats Note taking situations Call centers 5.Specification Compatibility: IBM AT, Windows98/2000/XP Communication: PS2, USB, COMBO(USB+PS2) Port Color: , any color as require Layout: 109keys Electronic data: +5V DC +-% @ 250mA Total travel: 2mm+-4 Certificate: CE & RoHS Packing Style: Color box(Retail packing) Packing Info: Color box size: 50 x 15 x 4cm Carton size: 53.5 x 33 x 43cm N.W.: 8.0Kg G.W.: 9.6Kg Space G.W.(W*H*Lcm/6000): 12.65kg QTY: 20 pcs 20FCL QTY: 6500pcs 40FCL QTY: 13900pcs 40HQ QTY: 17500pcs