: Connection : USB, Bluetooth, wireless 2.4G Number of devices connected simultaneously: 3 Wireless: Yes Is there a multimedia function key: Yes Does it support ergonomics? Yes With or without hand rest: No Applicable scenario: Office Style: Small Number Keyboard Is it a mechanical keyboard? Mechanical keyboard Compatible platform: Windows macos Keyboard type: mechanical keyboard Backlight effect: RGB Axis keyboard polling rate: 1000HZ Colour:A: purple Material:plastic Package Contents: 1 x Wireless Numeric Keypad 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.