Features: 1.22?key Bluetooth numeric keypad for OS X computers, laptops. 2.Made of ABS, more lightweight and durable to use. 3.No matter where you go, you can easily put it in any backpack, bag, or purse. 4.Long service life, it can Keystroke 5 million times. 5.Support for Windows / iOS / Android system. specification: 1. 22-key Bluetooth numeric keypad for OS X computers, laptops. 2. Made of ABS, more lightweight and durable to use. 3. No matter where you go, you can easily put it in any backpack, bag, or purse. 4. Long service life, it can Keystroke 5 million times. 5. Support for Windows / iOS / Android system. : Material: ABS Color: Black Model: BT22 Support System: For Windows/ iOS/ Android Number of keys: 22 keys Support Wireless/Bluetooth Solution: American Broadcom (BCM20730) Keyboard Life: (Keystrokes) 5 million times Response Speed: 5 milliseconds Bluetooth Transmission Distance: 10 meters Operating Current/Voltage: 0.25mA / 3V Built-in Lithium Battery: No Battery Type & Capacity : 2 * AAA (not include) Size: Approx. 135 * 85 * 20 mm/ 5.3 * 3.3 * 0.8 in Weight: 88 g Package list: 1 * Keypad 1 * English Manual