Portable 2.4G USB Wireless 19 Keys Mini Digital Keyboard Waterproof Number Numeric Keypad for Desktop Laptop Features: Applicable to laptops, business people, securities, banking units, portable, wireless. Suspension button, plug and play, daily waterproof, designed for blind typing. 2.4G wireless transmission technology, providing reliable wireless transmission within 10 meters, more convenient for wireless operation. Specifications: Color: Black Connection Mode: USB 2.4G Wireless Key Life: 5 Million Times Material: ABS Raw Material Power Supply: AAA Battery 1.5V (Not Including) Keyboard: 19 Keys Interface: USB Interface Receiver: Effective Distance 10m/32.81ft Product Size: 140 X 85 X 30mm/5.51 X 3.35 X 1.18" Color Box Size: 146 X 115 X 39mm/5.75 X 4.53 X 1.54" Net Weight: 95g Gross Weight: 130g Applicable System: for WINDOWS XP/WIN7/WIN8 VISTA/WINDOWS 2003 Notes: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 1-3mm measuring deviation due to manual measurement. Included: 1 X Mini Digital Keyboard 1 X USB Receiver Applicable to laptops, business people, securities, banking units, portable, wireless. Suspension button, plug and play, daily waterproof, designed for blind typing. 2.4G wireless transmission technology, providing reliable wireless transmission within 10 meters, more convenient for wireless operation.