Hellios Secret Weapon  Gaming BackLight Keyboard

The maximum number of simultaneous input - 19 keys
Backlight Control - Step 4
Key reaction rates - Step 3 Adjust
Waterproof design
Fn + ESC key - the backlight brightness control
Fn + F1 ~ F3 - 3-step reaction speed control
Key Life - 1000 million times
Interface - USB
Size - 497x211x36mm