Specification:
Model No.: NILIPAL Q2 LED aquarium light
SPECTRUM: 4 x Royal Blue, 1 x White, 1 x Purple
Product power：18W
Input voltage：100~240V
Suitable for fish tank：12''-16'' / 30~40cm
Can clamp thickness：≤2.5cm
Product size: total length 37.5, hose length 26cm

Features
1. Compact, lightweight, stylish and easy to use.
2. Using 3W high-quality lamp beads, high power and high energy efficiency.
3. Constant current source power supply, power saving, energy saving, safe and reliable.
4. Aluminum alloy shell dissipates heat fast and performance is more stable.
5. Silicone-coated+metal goose-neck arm, the angle can be flexibly adjusted in many directions.
6. Suitable for tanks with different thickness, can hold up to 25mm/1inch thick glass.

Please note:
The purple led looks dim, no problem with it.