Material: Aluminum alloy
Interface: 3.5mm audio plug
Weight: 628g
Size: 9*60*63

Package:
1* keyer
1* audio cable (1m)

Adjustable contacts, choose a more suitable telegraphy rhythm for oneself.
There is an anti slip silicone gasket at the bottom, no need to worry about lateral displacement.
The presence of a red or black single screw at the bottom is a quality inspection mark.