Features: Main features and advantages: 1. The size is comparable to that of an ordinary eraser, but the thickness is thinner than that of an eraser. Its extremely small size makes it extremely portable, and it can be placed in a pencil case, school bag, briefcase, key box, or even a pocket. Considering that most people who need to carry it out often carry a key, its size is almost negligible compared to the key. It does not take up too much space when in use, and it can be placed wherever the key can be placed, which also makes it more arbitrary for enthusiasts to choose the place of use. 2. When operating, not only will the buzzer sound, but the green LED light will also light up with the rhythm, and the sound and light will follow the rhythm, making it easy to control the rhythm. For beginners, whether they practice with recordings or practice by themselves, the dual cues of hearing and vision help to deepen their understanding of rhythm, correct mistakes in technique in time, and prevent QSD (bad hands) from being practiced. For veterans, daily practice not only does not rely on larger radios or traditional practice devices, but also allows them to visualize their own rhythm. CW is a language art as well as a music art. Everyone's rhythm has a unique personal style. After being visualized by the eye-catching green LED light, everyone's rhythm style is more pleasing to the eye. 3. It supports vertical hand keys and horizontal left and right sweep keys and mechanical semi-automatic keys. Other forms of manual electric keys are also made in 1 "device". No compromise is made with any manual electric key. No matter what kind of operation , it can be easily mastered with the help of this trainer. Specifications: Part name: CW trainer Color: Photo color Material: ABS Size: As shown in the picture Package content: 1*CW trainer Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. _x005f_x000D_ _x005f_x000D_