Description: 【Enhanced Training Experience】: Equipped with a buzzers, this CW trainer provides voice prompts during practice session, ensuring a more effective learning experience 【Versatile Connectivity】: The included data cable allows the telegraph key to connect seamlessly with most CW transceivers and transmitters, making it convenient for practical use 【Design】: Easily removable Morse code key from the trainer for hassle-free installation and operation, good for beginners 【Construction】: Crafted from pp and iron, this telegraph practice tool is and while remaining lightweight and portable 【Compact Dimensions】: Measuring 20cm in length, 15cm in width, and 5cm in height, this device is designed to be compact without compromising on functionality Specification: Material: Metal PP Size Chart: 20cmx15cm/7.87inchx5.91inch Package Includes: 1x Mini CW Morse Code Key   Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.