Technical Specifications Key : 18 keys Weight : 100g / 3 . 5oz Connection : 2 . 4GHZ Working distance : 10m Power : 1 ' AAA ( included ) Size : 3.5 * * 1.08 inch Color : black , blue , green , pink Compatible systems : window XP7 / 8 / 10 , IOS Package Contents: 1 * keyboard 1 * receiver Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error 2.4G Wirele Numeric Keypad Good companion for notebook Power-saving Design Notebook key layout with backspace key , more convenient for input and correction , and effectively improve work efficiency The red light indicate the power,and the red light blink show the low voltage status Whisper Quiet Round Keycap The round chocolate keycap accurately calculates the contact area between the finger and the keycap,giving you a more comfortable typing experience. Claic 18-key Layout Notebook key layout with backspace key , more convenient for input andcorrection , and effectively improve work efficiency . Pre the Numlock key to turn on the digital input function , and pre again to turn off the digital input function 2468 to switch the direction key function. 4 Stylish Colors Shenzhen AJAZZ Tongchuang Electronic Technology