MK321BT Bluetooth 5.1 3 Keys Custom Keys Game Office PS Clip Macro Programming Keypad Features: 1.Power Supply: inner 230mAh Li-Battery charging via USB Type-C cable 2. Comfortable buttons, multi-system compatibility 3. The multi-function can be customized through the software, which can be triggered at one touch 4. Suitable for office, games, multimedia and other occasions 5. The hand feels light and comfortable, and the non-stick tape quickly rebounds when pressed, which can be used for a long time 6. Simple operation, no need to drive, connect with data cable, after saving the software settings, it can be used 7. Game: One-click to realize multiple sets of commands for games; Office: One-click to open multi-layer folders; Network: One-click to open favorite pages or APPs; Design: One-click to realize combination key commands 8. Comfortable buttons, rounded arcs, ergonomic, fit the finger pulp 9. Set the button function through the software and save it to take effect 10. There are LED lights under the buttons, and various lighting effects can be set through the software 11. The green shaft button, the percussion is crisp, the ear is loud and crisp, and the mechanical sense is strong 12. Anti-slip foot pads can make the product stand more stable Parameter: 1. Material: plastic 2. Number of keys: 3 keys 3. Interface: USB 4. Line length: 1.5 meters 5. Shaft body: green shaft 6. Function: keyboard, mouse, multimedia, string, game, macro definition 7. Button life: 50 million times 8. Dimensions: 7.5 x 3.7 x 2.8cm 9. Weight: about 32g