Feature:1. The product is made of stainless steel material, and the surface is electroplated to increase the service life2. There is a cushion at the bottom to protect your desk and equipment from scratches, very practical3. High temperature quenching heat treatment strengthens the overall hardness, making the product more comfortable to use4. The new plug is detachable, which is convenient for players to replace, easy to operate5. Morse communication CW telegraph can be used as physical electricity experimental teaching aidsSpecification:Item Type: Morse CW TelegraphMaterial: Stainless steelModel: HY-K4 Package List:1 x Base1 x Spring1 x Press Plate1 x User ManualNote:Only for DIY Morse beginners to learn and use.