1[Applications] The Morse code key is perfect for radio enthusiasts and has a wide range of uses for camping or for POTA, for SOTA, for LOTA, or indoor use. 2[Double Paddle] A double paddle Morse code auto key with single side magnetic damping adjustment structure. Carbon fiber composite paddle, strong and durable. 3[Stable Contacts] The contacts of Morse telegraph key is made of pure silver, stable and reliable, with 5mm/0.1in sound interface with 1m/3ft cable. 4[Premium Material] Whole CW Morse telegraph key is made of stainless steel, brass, aluminum alloy composite materials, CNC machining, sandblasted and anodized surface. 5[Lightweight And Portable] This shortwave Morse code key is lightweight enough to be carried in a portable radio device for easy access at all times.