One Morse Code Training Adapter USB Keyboard Trainer for VBand/CW Keyboard Mobile PCs, supports 35mm jack, CW Keyboard Training Interface One Morse Code Training Adapter USB Keyboard Trainer for VBand/CW Keyboard Mobile PCs, supports 35mm jack, CW Keyboard Training Interface Product Features: Improve your CW keyboard skills with our USB keyboard trainer. It integrates seamlessly with the VBand software on the website, ensuring stable performance of both paddle keys and straight keys. This CW keyboard interface uses a universal 3.5mm jack, compatible with all common telegraph keys; non-3.5mm keys can be easily connected with a simple adapter or conversion cable. This device is suitable for amateur radio enthusiasts and Morse code learners, supporting automatic and manual key recognition to meet the needs of different users. Whether you are practicing at home, in a classroom, or on the go, our portable CW practice interface easily connects to mobile phones and computers, enhancing your learning experience in various scenarios. This plug-and-play CW keyboard trainer is compatible with multiple operating systems, including Windows, and can help any user improve their Morse code skills without additional setup.Specifications:Components: PCBDimensions: Approx. 44 x 20 x 7 mm / 1.73 x 0.79 x 0.28 inchesOption Type: USB CW Keyboard Trainer; USB Keyboard Trainer for Vband;Compatible with Windows SystemsPackage List:1 x USB Keyboard TrainerNote:Please allow 1 mm error due to manual measurement.The image may not reflect the actual color of the product due to differences between monitors.