Features: 1. 3 Application Scenarios, Button Customization, Rgb Lighting Effects 2. Wireless Mode, Automatic Sleep, Save Power 3. The Key Value Can Be Customized For Each Key. The 9 Keys Are And The Key Value Can Be Customized For Each Key. Dip Power Switch Is Used To Turn Off/On The Power. 4. Switching Between Wired Mode And Wireless Mode Is Achieved By Plugging In Usb. Plug In The Usb And Enter The Wired Mode. Without Plugging In The Usb, Flip The Power Switch And Use The Internal Battery To Power The Device And Enter The Wireless Mode. 5. Supports Ordinary Buttons, Multimedia Buttons And Mouse Button Functions. (Bluetooth Function Only Supports Ordinary Buttons); Supports Button Editing Function And Each Button Can Be Customized. Wireless Mode Automatically Sleeps To Save Power. Description: Type: Mechanical Keyboard Connection Method With Computer: Wireless Usage Mode: USB+2.4G+Bluetooth 5.1 Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Not Affect The Use size: About 98 x 66 x 13mm Material: ABS colour: Black Package Contents: 1 x 9-Key Wireless Custom Keyboard 1 x 2.4G Receiver 1 x Type-C Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.