Features:1. 34-key Bluetooth numeric keypad for Apple computers, laptops.2. Made of Aluminum Alloy + ABS, durable to use.3. No matter where you go, you can easily put it in any backpack, bag, or purse.4. Built-in Polymer Soft Pack Lithium Battery 302323-110mAh.5. Support for Windows, for iOS, for Android system.Specification:Material: Aluminum Alloy + ABSColor: BlackSupport System:For Windows, for iOS, for AndroidNumber of keys: 34 keysWireless/Bluetooth Solution: American Broadcom (BCM20730)Bluetooth Version: Bluetooth 3.0Keyboard Life: (Keystrokes) 5 million timesResponse Speed: 5 millisecondsBluetooth Transmission Distance: 10 metersOperating Current/Voltage: 2mA / 3.7VBuilt-in Lithium Battery: YesBattery Type & Capacity : Polymer Soft Pack Lithium Battery 302323-110mAhCharging Time: 2 hoursUse Time: 50 hoursStandby time: >2 monthsSize: 145 * 115 * 10 mm/ 5.7 * 4.5 * 0.4 inWeight: 140 gPackage list:1 * Keypad1 * USB Cable1 * English Manual.