Features: Discover the versatilities of our CW Trainer, design for seamlessly integration with both computers and smartphones, offering plugs and play functionality without the need for driver. Featuring Type C/USB interfaces and builts in OTG circuitry, this trainer supports double modes operation, allowing easy switching between modes for diverse training software like Lakey, Cwplayer, and MorseTrainer. Ideal for amateur radio enthusiasts and Morse code learners, this device intelligently recognizes manual or automatic key, enhancing your training experience. Perfect for use in various environment, whether at homes, in office, or on travel, providing flexibility and adaptability across different systems and devices. With intuitively button controls and LED indicators, effortlessly navigate through training modes and enjoy a smooth user experience, making it essential tool for effective CW practice. Specifications: Component:Plastic Size:Approx.33x15x7mm/1.3x0.59x0.28inch, 43x15x7mm/1.69x0.59x0.28inch Option Type:Type C CW Trainer,USB CW Trainer, Compatibility with Window Systems Note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color. Package includes: 1pc CW Trainer