Improve your Morse code skills with this versatile CW Key Trainer. It connects seamlessly to your phone and computer via a Type-C interface, making it ideal for both amateurs and professionals. The compact design and sturdy build ensure reliable use. Interface: - Type-C port: Connect to a computer using a phone power cable, or to a phone using a dual Type-C data cable. Built-in OTG circuit eliminates the need for an OTG adapter. - Key interface: Directly connect hand keys or automatic keys. For hand keys, connect the key first, then the phone or computer. The device intelligently identifies hand or automatic keys. Button: - Switch between Mode 1 and Mode 2. Press and hold to toggle modes when connected to a computer or phone. - In Mode 1, this button moves the mouse cursor. On a phone, press and hold to move the cursor downward; continue pressing to move it upward from the bottom. Indicator Light: - Solid on: Mode 1, suitable for mouse-operated training software or apps like Lakey, Cwplayer, MorseTrainer, etc. - Flashing: Mode 2, suitable for special training software or apps like Vband website, MorseMania, MorseIt, etc. Specifications: - Name: CW Key Trainer - Interface: Type-C - Color: Green - Material: Plastic Package Includes: 1 * CW Key Trainer Note: Light reflection and different displays may cause slight color variation. Measurement error allowed: +/- 1-3 cm.