Features Real-Time Morse-Code Decoder and Interactive Feedback: Instantly decode your taps with the built-in morse-code decoder. As you press the responsive button, the trainers card displays letters on the chart. Perfect for morse practice and muscle memory building. Dual-Mode Learning: Audio and LED Visual Trainers: Switch between audible beeps or silents LED flashes. This morse-code trainers lets you learn anywhere without disturbing others. Great for classroom or home practice. Portable PCB-Style Design for Daily Morse: Practice The compact card features a durable PCB-style body. Slip this pro trainers into your bag or pocket. Ideal for adult learning, telegraph training, and encryption practice. Ready-to-Use Reference Chart and No Setup Required: No-app, no Wi-Fi. The front panel includes a full morse-code chart. Beginners can start learning morse-code immediately. A true trainers tool for all ages. Built-in Record and Playback for Advanced Self-Training: Captures your own tapping sequences and review-rhythms accuracy. This morse-code trainers card supports real-time decoding and playback, helping you improve faster-than traditional methods. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Material: Alloy Package List: 1 or 2 or 3pcs LED Edition Morse-Code Trainers Cards