Compact wireless keyboard with Bluetooth connection, compatible with iOS/Android/Windows. Excellent Compatibility: This product can be used with iOS, Android, Mac, and Windows. Shortcut keys are also available for each operating system. *This product uses a US keyboard layout. Lightweight and Compact: This product is two-thirds the size of a conventional keyboard. It also weighs only about 200g, making it very lightweight. Comfortable Keyboard: Quiet keys have been adopted. Long-lasting Use: You can use it for more than 3 months with the power-saving mode (when used continuously for 2 hours a day). *Please purchase 2 AAA batteries separately. Package Contents: Anker Ultra Slim Bluetooth Wireless Keyboard, User Manual, Customer Support.