CW Key Trainer Battery Powered Manual Morse Code Trainer Hand Key Exerciser Oscillator

CW Key Trainer Battery Powered Manual Morse Code Trainer Hand Key Exerciser Oscillator.Feature: 1. Compact Size: This CW key trainer is similar in size to a regular eraser, easily fitting into a pencil case, backpack, or pocket, allowing enthusiasts to practice Morse code anywhere. 2. Battery Powered: The Morse code trainer operates on a single battery (not included), eliminating the need for external power, enhancing its versatility. 3. Audio and Visual Feedback: The Morse key trainer features