【SLIM DESIGN & ERGONOMIC TILT】:The wireless numeric keyboard is made of engineering plastic for long-lasting use. The ergonomic tilt ,comfortable typing precise control, good resilience fast response for comfortable typing and good look, slim style appearance. | 【BUILT-IN HIGH-CAPACITY RECHARGEABLE and SAFE LITHIUM POLYMER BATTERY】The number keypad built-in two high-capacity lithium batteries with 250mAh, the standby time of the keypad has more than 2 months when fully charged. Auto sleep function, the bluetooth number pad will go into sleep mode auto to save power and energy when not in use.Press any key can wake up the keypad within 3 seconds.(One Micro USB charging cable will come with the keypad). | 【35-KEYS with SHORTCUT KEY】: Increase your data entry speed and accuracy with this 35-keys numeric keypad, including all numbers, dedicated control keys for home, end, tab, page up/ down, calculator key, screen capture key, set of arrow keys and more. 【NOTE: Calculator key need to manually open the calculator program on Mac OS, then input the number on keypad to run the calculatfunction】 | 【2.4G WIRELESS】The numeric keypad uses the latest 2.4GHz wireless technology,plug and play, no delay and caton, fast data transmission , and working range is up to 32.8ft. | 【COMPATIBLE】: Compatible with Mac OS 10.0 above, Window 7/ 8/ 10, Android. [NOTE: Due to MAC OS is a special system, the "page up", "page down", "search", "screenshot", and "ins" key won't work with Mac, but other keys and number keys can work well].