11"Aquarium LED Lighting System Features: Long lift-span, energy saving, environmentally friendly . High safety with 12V low voltage transformer. LED beads with high brightness, high energy efficiency, and high reliability. Integrated thermal design with beautiful and meat shape. High brightness. No flashing. Excellent dustproof/waterproof effect with level Ip68. Easy to fix with strong suckers. Firm and Reliable Total Length: 11".