Features: This is a two-in-one CW keyer that can be used as a keyer or a key trainer. When used as a key trainer, it supports both manual keying and automatic keying. 1. It is about the same size as an ordinary eraser, but thinner than an eraser. Its extremely small size makes it extremely portable and can be put into a pencil case, school bag, briefcase, key box, or even a pocket. Considering that most people who need to carry it out often carry QRP radios and keys, its size is almost negligible compared to QRP radios and keys. It does not take up too much space when in use. As long as there is a place to put QRP radios and keys, it has a place, which also allows enthusiasts to choose the place to use it more freely. 2. It only needs a for CR2032 battery for power supply, does not require an external power supply, and gets rid of the constraints of the power cord, further reducing the dependence on desktop space and broadening the use scenario. When used as a keyer with a QRP radio, you do not need to carry an additional power supply when operating outdoors. The keyer plus the for CR2032 battery can support automatic keying for your QRP radio without keying function. 3. Multiple functions give CW unlimited possibilities. This keyer can also be used as a practice device, supporting vertically operated hand keys, horizontally operated sweep keys and mechanical semi-automatic keys and other forms of manual electric keys. It also supports all forms of automatic electric keys, without compromising with any electric key. No matter which operation , with the help of this keyer, you can easily master it. When used as a keyer, it can support automatic keying for your QRP radio without built-in keyers. Whether it is a single paddle or a double paddle, and play, the blessing of automatic keying will also make your operation more efficient. 4. Convenient and easy to use, simple to set up, when used as a trainer, the manual electric key and the automatic electric key only need to be connected to the corresponding interface respectively; when used as a keyer, the automatic electric key is connected to the corresponding interface, and the radio is connected to the output/hand key interface. In the automatic key trainer and keyer mode, toggle the toggle switch to switch the left and right of the point. Press the speed key, press the point of the automatic key to increase the keyer speed, and press the of the automatic key to reduce the keyer speed. 5. Whether used as a trainer or a keyer, not only will the buzzer sound, but the blue LED light will also light up with the rhythm. Sound and light follow the rhythm, making it easy to control the rhythm. For beginners, when used as a manual electric key trainer, whether practicing with recordings or practicing by yourself, the dual cues of hearing and vision help to deepen the understanding of rhythm, correct technical errors in time, and prevent practicing QSD (bad hands). For veterans, daily practice not only no longer relies on larger radios or traditional trainers, but also allows you to visualize your own rhythm. CW is a language art as well as a musical art. Everyone's rhythm has a unique personal style. After being visualized by the eye-catching blue LED light, everyone's rhythm style is also more pleasing to the eye. Specifications: Part Name: CW Trainer Color: Photo Color Material: ABS Size: As shown in the picture Package Contents: 1*Electric Key Connector Note: 1. Due to many factors such as monitor brightness, light brightness, etc., the actual color of the product may be slightly different from the picture shown on the website. 2. Please allow slight manual measurement deviation for the data. _x000D_ _x000D_