1PC PC+Vband Multi-mode Cw Trainer For Mobile Version Electric Key Typ C Interface For Computers And Mobile Phones CW Training Features: This trainer has two working modes. It can be used on computers and mobile phones for CW training. It is suitable for various systems and is plug-and-play without the need for a driver. If you want to use this trainer on a mobile phone, you need to prepare a dual Typec port data cable. If you want to use it on a computer, you need to prepare a mobile phone charging cable with 1 USB port and 1 Typec port. 1. Typec interface: You can connect the computer through a mobile phone charging cable, or you can connect the mobile phone through a dual Typec interface data cable. This trainer has built-in OTG circuit, so there is no need for OUG conversion. 2. Electric key interface: You can directly connect the hand key and the automatic key. To connect the hand key, you need to connect the hand key first and then connect the mobile phone or computer. This device will intelligently identify the hand key or automatic key. 3. Button: Used to switch between mode 1 and mode two. Press and hold this button to connect a computer or mobile phone to switch between the two modes. In mode 1 , this button can move the mouse mark. This function is especially important on mobile phones. Press and hold this button to move the mouse mark downward. Move to the bottom of the mobile phone screen and continue to press and hold this button. The mouse mark will move upward from the bottom. 4. Indicator light: indicates the working status of two states. The indicator light is always on in mode 1, which is suitable for training software or APP operated by mouse, such as Lakey, Cwplayer, MorseTrainer, etc.; the indicator light flashes in mode 2, which is suitable for some special training software or APP, such as for Vband website, MorseMania, MorseIt, etc. Specifications: Part name: cw trainer Material: as shown Color: green Size: 33*15mm Package contents: A: 1*cw trainer (Type-c interface) B: 1*cw trainer (USB interface) Note: 1: Please allow 1-2 cm error due to manual measurement, please make sure you do not mind before ordering. 2: Due to the difference between different monitors, the image may not reflect the actual color of the item _x000D_