BLUETOOTH NUMBER PAD: The Bluetooth 3.0 technology enables a stable wireless connection. The external numeric keyboard with 28 keys extends your existing keyboard and offers a range of 10m MULTIFUNCTIONAL NUMPAD: 28 full-size keys with Numlock, Delete, Tab, etc. Use the wireless numpad, including Backspace, Start, End, Tab and more to help you with billing tasks COMPATIBILITY: Widely compatible with Windows 2000 / Me / 98 / XP / Vista / 7/8/10, Android, Samsung, Surface Pro 3, Pro 4, Android mobile phone, tablet PC, laptop etc. (NOTE: This numeric keypad is NOT fully compatible with MacBook OS system and iOS system, calculator and function keys cannot be used, but other number and symbol keys ESC, Tab work fine.) HIGH QUALITY: Soft touch, precise control, good reliability, quick response, quiet operation and long service life. With its slim design, you can take the number pad anywhere with you ERGONOMIC AND ENERGY-SAVING: The cushions on the back offer optimal comfort and keep the Bluetooth Numpad securely in position. The keypad will automatically go into sleep mode if it is not used for 15 minutes. Press any key to wake it up within 3 seconds Product Size: bluetooth Specification: Item weight: 111g Size: 13 * 11 * 1cm Number of keys: 28 keys Battery required: 2 * AAA batteries (not included) Bluetooth connection: 1) Insert 2 AAA batteries and turn ON / OFF button on 2) Press and hold the Bluetooth button for 3 seconds until the LED indicator flashes 3) Go to System Settings> Select Device> Add Device Compatibility: Supports Bluetooth-enabled Tablet PC Desktop with Android Windows 2000 / Me / 98 / XP / Vista / 7 / 8/10. This numeric keypad is NOT fully compatible with MacBook OS and Apple iOS. The calculator and function keys do not work, but other number and symbol keys work fine. Scope of delivery: 1 Bluetooth numeric keypad 1 instruction manual