K503RGB:
RGB full color backlit
Adjustable breathing speed rate of LED light
104 standard keys
25 non-conflict keys
12 multimedia keys
2 adjusting gear for input speed
Interchangeable “↑ ← ↓ →” keys and “WASD” keys
WIN keys can be disabled when gaming
Unremovable laser engraved chocolate keycaps
M601RGB:
7200DPI
4000FPS
10G acceleration
10 million click life
Trendy backlight
6 function buttons
8 built-in weights
2 side buttons
with software
8mm width antiskid roller
180cm high-speed USB wire
3mm diameter high strength fiber wire
Button durability : 5 million clicks
Durable TEFLON feet pads for fast and fine sliding
Comfortable ergonomic design