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:Material: ABSColor: BlackModel: BT22Support System: For Windows/ iOS/ AndroidNumber of keys: 22 keysSupport Wireless/Bluetooth Solution: American Broadcom (BCM20730)Keyboard Life: (Keystrokes) 5 million timesResponse Speed: 5 millisecondsBluetooth Transmission Distance: 10 metersBuilt-in Lithium Battery: NoBattery Type & Capacity : 2 * AAA (not include)Size: Approx. 135 * 85 * 20 mm/ 5.3 * 3.3 * 0.8 inWeight: 88 gPackage list:1 * Keypad1 * English Manual.