【Wide Compatibility】Compatible with laptops, desktops, smart TVs, set-top boxes, and more, offering versatile use for a variety of devices 【Anti-Interference 2.4G Wireless Technology】Uses 2.4G ISM frequency band with automatic frequency hopping to avoid interference from other wireless devices, ensuring a stable connection 【Long Wireless Range】The wireless transmission range extends up to 10 meters, providing convenient, obstacle-free control from a distance 【High Precision Optical Mouse】The mouse features a 1000CPI high-precision optical sensor, offering smooth, responsive, and accurate control for everyday tasks 【Energy Saving Features】With multiple automatic sleep modes, the keyboard and mouse quickly enter deep sleep to conserve battery power when not in use 【Plug and Play】The receiver and transmitter are pre-synced, requiring no pairing. Simply plug in the USB receiver and start using it immediately Specifications: Parameter Details Operating Frequency 2402-2480 MHz Keyboard Voltage 3V (1.5V x 2) Keyboard Current <5mA Battery 2 x AAA batteries (not included) Channels 16 Effective Distance 10 meters Bluetooth Compatibility Windows 8, 10, Android 5.0+, iOS, macOS X 10.10+ 2.4G Wireless Compatibility Windows XP/7/8/10+, Android 4.4+, iOS 13+, macOS X 10.5+, Linux Kernel 2.6+, Chrome OS Mouse Precision 1000 CPI optical technology Connectivity 2.4G Wireless, Bluetooth 3.0 Support Devices Support wireless and two Bluetooth devices Switching Methods Wireless mode: FN+1, enter 2.4G wireless mode (Must plug NARO into the USB port of your computer first) Bluetooth device: FN+2 or FN+3 1. Insert the 2*AAA batteries into the keyboard. 2. Use the device to search for a Bluetooth keyboard. 3. Press the “connect” key on the bottom of the keyboard for 1-3 seconds to connect. The light is flashing. 4. If you find the device name “Bluetooth keyboard”, you can use it. Bluetooth mouse (without USB receiver) Suitable for tablets and mobile phones (Does not support for iOS, Apple's tablets and mobile phones, Bluetooth mouse is only supported after iPhone 13 Pro), support for Apple's laptops and desktop computers MAC system. 1. Open the Bluetooth device. 2. Press the pairing button on the back of the Bluetooth keyboard to pair (some keyboards do not have a switch, usually press FN+C on the front to pair the Bluetooth). Press the left and middle buttons of the Bluetooth mouse (the middle button is the scroll wheel button) at the same time for 3-5 seconds to find the device name YHK-BT Mouse 3.0, no PIN code is required.