Feature:1. This CW trainer comes with a buzzer, which has voice prompts during practice to ensure better practice.2. The data cable can connect the telegraph key to most CW transceivers and transmitters for practical use.3. You can easily remove the key from the Morse code trainer, and the installation is also very convenient.4. Basic but perfect in workmanship, the telegraph tapper allows for simple operation, suits for beginners.5. Adopting premium ABS and iron material, the telegraph practice tool is very durable, and easy to carry.Specification:Item Type: Morse Code KeyMaterial: ABS + IronFunction: Morse code manual CW key. Colour: Black.Package List:2 x Button1 x Round Hole Data Cable1 x Screwdriver5 x Screw1 x Morse Code KeyNote:Please note that the color of the accessory round hole data cable of this product will be sent randomly, please make sure you don't mind before ordering.