You are purchasing a high quality 2 Mode LED Aquarium Light Unit
This model is 240mm long, with 20 LEDs (For tanks up to 50cm)
These quality LED light units have a dual switch mode, meaning you can switch from just Blue LEDs, to Blue and White LEDs at the same time.
Product Name : Aquarium Magnetic Brush;Color : Dark Blue, White
Material : Plastic & Magnet
Total Size : 7 x 6.5 x 3.5cm / 2.8" x 2.6" x 1.4"(L x W x T)