Features: High quality material. It's soft and durable, comfortable for touch. Environmental for protection, use of imported high-grade medical silicone materials, non-toxic, tasteless and harmless. Fully sealed design, waterproof, dustproof, anti-oil, anti-acid, can be used in any harsh environment, and can disinfect and clean water. Can be curled into the bag, easy to carry, to save space. The mute, hit mute, can be completely silent, not afraid to sleep affect the family. Good elasticity, soft for touch feel comfortable, warm, finger for protection from harm. The unique surface treatment, so that for key words will never fall off, do not fade. Special design and production process, so that the keyboard is lean, without any metal gong nails, reliable performance and stability. USB and PS / 2 interface converter. Specifications: Size: 430x125mm/16.93x4.92inch USB Cable Length: about 145cm/57.09inch Color: Black Material: Silicone Interface: USB2.0 for Key number: 103 KEYS for Key life: 15 million times Operating temperature: -3080 /-22176- LED indicator: Numeric keys, capitalization Right side with numeric keypad Package included: 1 x 103 keys waterproof keypad with a USB connector