1、Simpler Tapping: Side magnetic damping adjustment structure will largely simplify and facilitate the automatic tapping. 2、Great in Design: Dual key paddles are made of carbon fiber, while the silver contact ensures reliable work performance. 3、Better Material: The body adopts premium stainless steel, brass and aluminum alloy materials, very durable for using. 4、3.5mm Interface: 3.5mm standard stereo receptacle for easy plug and play hookup, making the operation easier to proceed. 5、Easy to Install: Comes with a compact size of 79 x 79 x 51mm, the lightweight Morse code key is very easy to install. Item Type: Morse Code Key Material: Stainless steel, brass, aluminum alloy, carbon fiber. Product Size: Approx. 79 x 79 x 51mm / 3.11 x 3.11 x 2.01in Interface: Approx. 3.5mm / 0.14in interface. 1 x Morse Code Key 1 x Connecting Cable