CW Keyer Automatic Trainer, PCB Double Paddle Morse Code Key with Magnetic Base, 3.5mm Sound Jack, Type C Interface.Feature: 1. Responsive Double Paddle Design: Designed with excellent PCB materials and mechanical switches, this double paddle Morse code key ensures a highly sensitive touch and quick bounce back, providing a slick operating experience for both seasoned operators and beginners alike. 2. Compact and Portable Design: The mini CW automatic Morse key is lightweight and easy to carry,