Made of high-quality silicone, the keyboard has no poisonous evil smell, according to the requirement of the environmental protection, it is a kind of creative new product The colorfast printed 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 shape design Excellent and various in colors Long durability (one million life cycle of key) Specification compatibility: Microsoft Windows 98/2000/XP/Vista/Me Communication: USB, combo (USB and PS2) port Color: black, any color as require Layout: 104 keys Total travel: 2mm ±4 Any color as require Total travel: 2mm 414084 Packing style: color box Packing information: Color box size: 410 x 150 x 30mm Carton size: 490 x 430 x 300 or 530 x 430 x 430mm Quantity: 30pcs/ctn or 48pcs/ctn