Product Name: USB keyboard functionality buttons


Color: red, yellow


Button size: diameter 3.5 inches / 90mm * height 1.6 inches / 40mm


Key function: Space key/Enter key


USB cable length: 39.4 inches / 1 meter


Application scenarios: raffle button, contest answering device, audio and video editing, laboratory teaching, medical image collection, mechanical equipment control.


?100% satisfaction guarantee, if you have any questions, please send us an email, we will serve you wholeheartedly