High Quality: ABS shell is waterproof with good light transmission, easy to clean. The hose pole can be rotated, so the lighting angle and direction can be adjusted at will. Brightness Adjustment: There is an external control switch to adjust the LED light brightness. There are 3 lighting modes to simulate natural lighting, promote photosynthesis of aquatic plants. Application: Fixed mounting clips can be clamped on the aquarium wall with edge thickness of 0.6cm/0.2" or less. Screws can be adjusted loosely. Recommended for small freshwater aquariums under 5 gallons. USB Charging: Power cord length is 35". It can be connected to cell phone power plug, mobile power, laptop, USB socket, etc. (Adapter not included). product support: Any questions or concerns, please feel free to contact us so we can do our best to solve it. We will strive to provide the highest quality service for you.