Handmade DIY products with unique craftsmanship: This product is assembled by manual welding, not mass-produced by machines, and each product embodies the creator's heart and passion. Due to the characteristics of handmade production, each product may have subtle individual differences, such as solder joint size, component arrangement, etc. However, this does not affect the normal use of the product, but rather highlights its uniqueness and collectible value. Double paddle PCB key, sensitive operation: using high-quality PCB board and mechanical switches, ensuring sensitive touch and quick rebound of the key, bringing you a smooth operating experience. Automatic key trainer for more efficient learning: With built-in automatic key function, it can simulate Morse code signals at different speeds, helping you learn from scratch and gradually improve your transmission speed. Can be connected to a computer, with more powerful functions: equipped with a USB interface, it can be connected to a computer to use relevant software for Morse code training, decoding, recording and other operations, with more powerful functions. Minimalist design, easy to carry: Adopting a minimalist and fashionable design style, the compact size makes it easy to carry and enjoy the fun of Morse code anytime, anywhere. CW key automatic key trainer Morse code dual paddle PCB key can be connected to a computer. This is a CW key automatic key trainer designed specifically for amateur radio enthusiasts, Morse code learners, and retro technology enthusiasts. It adopts a dual paddle PCB key design and has the function of connecting to a computer, providing you with a more convenient and efficient Morse code learning and training experience. Key type: Double paddle PCB key Connection method: USB Colour:As Shown Material:Metal Kind reminder: This product is a handmade DIY product, not produced by batch machines. There may be some minor defects, such as solder joint size, component arrangement, etc., but it does not affect normal use. We apologize for any inconvenience caused. Please read the instructions carefully before use and follow the correct methods for operation. Do not place the product in a damp, high temperature, or direct sunlight environment. Package Contents: 1 * Double paddle PCB key Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.