[2.4GHz connection] The keyboard and mouse share a single USB receiver and can be used by simply plugging the USB receiver into the device. With 2.4GHz wireless technology, you can operate comfortably with stable communication within a maximum of 10 meters. It is compatible with Mac and Windows devices. << Bluetooth connection is not possible>> This keyboard is a 2.4G USB receiver connection keyboard. It is not a Bluetooth keyboard. The specifications are different from the other model "IC-BK22 (Bluetooth keyboard)". Please be careful. 【Japanese layout】 It is a keyboard with a Japanese layout that makes it easy for Japan people to type. It is equipped with a numeric keypad and directional keys for excellent convenience. It's ideal for those who type numbers frequently. [Simple design] It is a thin keyboard that is lightweight and easy to carry. The sleek body and simple and stylish design make the desk a high-quality space. [Pantograph type] It uses a pantograph system that has the same keystroke feel as a general laptop. The standard 19mm key pitch and shallow 1.8mm keystroke provide smooth and comfortable typing. [Rechargeable] Lightweight, thin, and portable, it can be fully charged in 2 hours and can be used continuously for about 90 hours. In addition, if there is no operation for 30 minutes, it will automatically enter sleep mode and restart by pressing any key. [DPI Adjustable & Silent Mouse] Depending on the application, the speed of the cursor can be adjusted in three steps: 1000/1200/1600. The streamlined mouse pursues a design that fits perfectly in the hand. It uses a silent switch that suppresses the clicking sound to achieve a quiet clicking sound. You can also use it in libraries without worrying about your surroundings. The mouse requires 2 AAA batteries (sold separately).