Feature 13 MODE CONNECTIVITY: The keyboard supports wired USB, wireless 2.4g and wireless Bluetooth connectivity, allowing users to choose the most suitable connection for their needs, which is convenient and flexible. 2BLUE SWITCH: With blue switch mechanical keyboard design, the keyboard keys feel better and more comfortable to use, suitable for long time office and game use. 3HID PROGRAMMING: The keyboard supports HID programming, users can customize the keyboard functions through the programming software download address to meet the personalized needs of different users. 4MULTIFUNCTIONAL S KEYS: The keyboard is equipped with a multi functional S keys, which can be clicked to switch the key value layer, and each layer of key values can be set to different functions, allowing three keys to have nine key function customization to enhance the user's work and gaming efficiency. 5LIGHTWEIGHT AND PORTABLE: The keyboard is designed in mini size, which is more lightweight and portable, making it easy to carry and use.Item Type:3KeyMiniKeypadMaterial: ABSConnection: Wired USB, Wireless 2.4g, Wireless BluetoothSwitch: Blue Switch Mechanical KeyboardBattery Type: Built in 140mAh Lithium Ion BatteryApplicable Devices: Computer General PurposeMultifunction S Key Description: Click to Switch the Key Value Layer, A Total of Three Layers of Key Value Layer, Each Layer of Key Value Can Be Set to Different Functions, So That the Three Keys Have a Nine Key Function Customization (Red Indicator Light Indicates That the First Layer, Green lamp the Second Layer, Blue lamp the Third Layer) .wang-edit-text{ font-family:'Arial' !important } .wang-edit-text table { border-top: 1px solid 000 border-left: 1px solid 000 } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid 000 border-right: 1px solid 000 padding: 3px 5px } .wang-edit-text table th { text-align: center }Package List1 x 3KeyMiniKeypad (Ship with Inbuilt Battery)1 x Data Cable1 x Receiver1 x Instruction Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.