Easy Operation: This telegraph straight key comes with a buzzer, which has voice prompts during practice to better practice and allow easy operation. Wide Compatibility: This morse code tool data cable can connect the telegraph key to transceivers and transmitters for convenient use. your different needs. Easy to install: You can easily remove the morse code key from the morse code trainer, and the installation is also very convenient. It can be used for beginners to learn or . This morse code is basic perfect in workmanship. Adopting high ABS and iron material, the telegraph practice tool is very durable. Basic perfect in workmanship, the telegraph faucet allows easy operation, suitable for beginners. Product name: key Item Type: Morse Code Key. Function: key manual morse code explain: 1. Pull the switch to select output to the radio station or direct sound generation. 2. Two No. 7 batteries can be installed inside to the buzzer to sound. 3. It can be used for beginners to learn or . Colour:black Material:ABS+Metal Package Contents: 1 x key 1 x 3.5mm headphone cable Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.