Proper lighting is an important factor in successfully maintaining a planted aquarium. Using the right color of light will create and healthy plants. This light can provide the proper lighting that allows you to appreciate your aquarium. Feature - Color: Blue White. - Material: Acrylic. - Size 19cm: Approx. 19 x 7 x 4 cm / 7.5 x 2.8 x 1.6 inch. - Size 29cm: Approx. 29 x 7 cm / 11.4 x 2.8 x 1.6 inch. - Size 39cm: Approx. 39 x 7 cm / 15.4 x 2.8 x 1.6 inch. - Made of acrylic material, durable and practical for long lasting use. - Easy to install and use, very beautiful. - Good waterproof performance design, suitable for use in fish tank, or aquarium. - Used for decorating fish tanks, aquarium landscaping, room decoration, etc. - Can used as the ornamental lighting for fish tanks, also can be used for home lighting and exhibition lighting. Specification Size 19cm Light Detail: - Light Bead: 9pcs. - Power: 1.8W. - light Line Length: 1.7m/66.9 inch. - Voltage: 110/220-240. - Applicable Fish Tank: Approx. 30cm/11.8 inch. Size 29cm Light Detail: - Light Bead: 15pcs. - Power: 3W. - light Line Length: 1.7m/66.9 inch. - Voltage: 110/220-240. - Applicable Fish Tank: Approx. 40cm/15.7 inch. Size 39cm Light Detail: - Light Bead: 21pcs. - Power: 4.2W. - light Line Length: 1.7m/66.9 inch. - Voltage: 110/220-240. - Applicable Fish Tank: Approx. 50cm/19.7 inch.