4 Keys Medical Equipment Testing Custom One-key Combo Shortcut Keyboard, Cable Length: 1.5m 1. Metal shell, high-end matte texture 2. Shortcut keys, mouse functions, multimedia playback, game keys, etc. 3. Keyboard function: can replace any key and key combination on the keyboard 4. Multimedia function: can realize one key to open the player, increase and decrease the volume, change songs up and down, etc. 5. Gamepad function: It can replace any key position on the gamepad, and can be set to the functions of up, down, left, right and 8 buttons 6. Mouse function: It can replace the mouse function, and can be set to the left, middle, right mouse button or the movement of the X, Y axis and the up and down scrolling function of the wheel Parameter: 1. Material: aluminum alloy 2. Number of keys: 4 keys 3. Interface: USB 4. Cable length: 2 meters 5. Button life: 1 million times 6. Working current: less than 100mA 7. Packing list: product, sponge pad, dust cover, box 8. Dimensions: 16.5 x 11.5 x 1.3 cm 9. Weight: about 466g