_x005F_x000D__x005F_x000D_This numberic keyboard is made of sturdy top-grade ABS material with perfect dust proof effect. With built-in receiver storage, plug and play, signal transmission stability, up to 10 meters working range, easy to carry. Convenient and easy to use, and is applicable to any desktop and laptop computers._x005F_x000D__x005F_x000D_Feature_x005F_x000D__x005F_x000D_- Color: Black _x005F_x000D_- Material: ABS_x005F_x000D_- Size: 12.3x8.5x2.2cm_x005F_x000D_- Response speed: 5msec_x005F_x000D_- Transmission distance: 10m_x005F_x000D_- Working current: 0.25mA_x005F_x000D_- Working voltage: 3V_x005F_x000D_- Working time: 80h_x005F_x000D_- Super slim numberic keyboard_x005F_x000D_- Built-in receiver storage, signal transmission stability, up to 10 meters working range, easy to carry_x005F_x000D_- Fast mechanical keys with medium resistance, precise actuation, audible click sound, and tactile bump feedback._x005F_x000D_- The stepped keycap,fit your hands easily to prevent fatigue. Spring type ergonomic design, care for your wrist. Works with PC and desktop computers that have Windows 2000 / XP / Vista / 7 / 8 / 10 operating systems_x005F_x000D_- Good choice for your pc_x005F_x000D_Packing list: 1 x numeric keypad