Redragon K552-KR-ES Rainbow Backlight TKL Mechanical Gaming Keyboard

Durable Metal-ABS Construction: The keyboard features a sturdy metal top panel and ABS construction, making it a long-lasting choice.

Rainbow RGB Backlighting: As a gaming keyboard, it features RGB backlighting. One source mentions it has 18 different RGB lighting effects, which is close to your figure of 19.

Engineered Keycaps for Clear Backlighting: It uses double-shot injection keycaps, which help prevent the legends from wearing off and ensure clear, even backlighting.

Anti-Ghosting for Full-Speed Input: The keyboard supports full-key anti-ghosting, allowing all 87 keys to be pressed simultaneously without conflict for smooth gaming.

Hot-Swappable Red Switches: This design allows you to easily pull out and replace the mechanical switches without soldering, offering great customization potential.

Compact 80% Layout: With 87 keys, it has a compact (80%) form factor that saves valuable desk space by omitting the number pad.

Splash-Proof Design: The metal panel contributes to a splash-proof design, protecting the keyboard from accidental liquid spills.

Wired Connection with Fast Response: The USB wired connection ensures a fast and reliable signal with minimal delay, ideal for gaming.

Cross-Platform Compatibility: The keyboard is compatible with Windows operating systems. However, explicit mention of Mac OS compatibility was not found in search results.