Features 1. 22-key Bluetooth Numeric Keyboard 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 handbag. 4. Long lifespan, it can withstand 5 million keystrokes. 5. Support Windows / iOS / Android system. Specification Features: 1. 22-key Bluetooth Numeric Keyboard 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 handbag. 4. Long lifespan, it can withstand 5 million keystrokes. 5. Support Windows / iOS / Android system. Specification: Material: ABS Color: Black Model: BT22 Supported System: For Windows/ iOS/ Android Number of Keys: 22 Keys Wireless/Bluetooth Solution Support: American Broadcom (BCM20730) Keyboard Lifespan: (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 Included) Size: Approx. 135 * 85 * 20 mm/ 5.3 * 3.3 * 0.8 in Weight: 88 g Package List: 1 * Keyboard 1 * English Manual Package List