Communicates with up to 9 devices! A Bluetooth(R) 2.0 compatible, Bluetooth(R) wireless full keyboard. Uses 2 AAA batteries (sold separately) If your computer has a built-in Bluetooth(R) module, you can use the full keyboard smartly without connecting a receiver. You can register up to 9 devices, including Windows PCs, Mac PCs, PDAs, and mobile phones, and instantly switch between connected devices. Usable up to approximately 10m in non-magnetic environments and approximately 3m on magnetic surfaces such as steel desks. (Based on our research) It features a gently curved round panel design, providing a natural key touch and comfortable operation. It comes with an adjustable tilt stand to adjust the angle. Rubber is used on the contact surface of the tilt stand to provide a non-slip effect. It's a stand-type keyboard that can be stored upright, allowing you to effectively use your desk space. The key type uses the same "pantagraph method" as laptop keyboards. Despite its compact size, it features a 15.6mm key pitch and a Japanese 83-key layout for comfortable typing. The keycaps feature a stylish and easy-to-read original font. No need to install dedicated drivers; just pair and use immediately. Equipped with a battery level indicator lamp to notify you when it's time to replace the batteries. *A separate Bluetooth(R) adapter is required if using with a computer that does not have a built-in Bluetooth(R) module. Thank you for viewing.