Features: 1.High Performance: Special design and production process, so that the keyboard structure streamlined, without any metal gong nails, reliable and stable performance. Key life up to 15 million times, with a USB and PS / 2 interface conversion. 2.Fully Sealed Design: Waterproof, dustproof, oilproof, can be used in any harsh environment and can be cleaned in water. 3.Bright Color: Distinctive personality, unique surface treatment, so that the key text never falls off and does not fade. 4.Soft And Comfortable: Good resilience, soft and comfortable to the touch, feel friendly, protect your fingers from harm. 5.Silent And Portable: Completely silent, not afraid to affect the family sleep. Can be curled and stuffed into the bag at will, easy to carry, save space. specification:Item Type: Silicone Keyboard Material: Silicone Number Of Keys: 107 Keys Function: Waterproof, Dustproof And Silent Interface: 2.4G Interface Device Adaptation Temperature Difference: -40-80 Keyboard Battery s: 2 x AAA Batteries (Battery Not Included) PackageList: 1 x Keyboard 1 x USB Receiver