Adjustable Lighting: The aquarium LED submersible light features a high-transparency housing with excellent light transmission. The light color is adjustable, offering three modes: red, blue, green, and white; red, blue, green; and single-color white light. These modes can be switched with a single button. External Controllerz: The aquarium LED submersible light comes with an external controller for adjusting light color, brightness levels, and power on/off. USB Charging: The aquarium LED submersible light has a power rating of 3W and can be charged via a USB interface connected to a smartphone power adapter (not included in the package), laptop, desktop computer, power bank, or USB socket. Waterproof Design: The aquarium LED submersible light is highly waterproof and can be fully submerged for use. The entire unit is sealed with resin, allowing it to sink to the bottom of the water. Wide Application: The aquarium LED submersible light is suitable for various types of aquariums, including glass, acrylic, fish tanks, plant tanks, fish ponds, and rock gardens. It can be securely attached to the bottom, sides, or inner walls of the aquarium using suction cups.