[PACKAGE OPTIONS] Package A 1 manual key plus 1 connecting cable; Package B 1 manual key, 1 connecting cable and 1 communication cable; Package C 1 manual key, 1 connecting cable and 1 sound and light module to support different training styles. [PRECISION/ STAINLESS FRAME] Pure stainless steel frame provides a sturdy, corrosion-resistant structure built to endure frequent handling; compact 90 x 50 mm size balances durability and portability for bench or field use. [SMOOTH, CONSISTENT KEYING] Solid keystroke feel delivers reliable electrical switching for clean CW signal generation; responsive action is excellent for practicing code speed and accuracy. [EASY SETUP AND ACCESSORIES] Connecting cable supplied for direct hookup to computer keying interfaces and CW radio stations; choose the communication cable or sound and light module to expand training options. [SUITABLE FOR TRAINING AND HOBBY] Great for beginners learning the basics and for experienced hams refining technique; clear and modular options support classroom instruction, solo practice, and radio contests.