Essential Clip On Aquarium Light: Light is made of aluminum alloy material and high brightness 5730 lamp beads; bracket material is sturdy ABS; The lamp panel is filled with glue to increase the waterproofing of the lamp; best partner for fish tanks3 Type of Lighting Color Mode and 10 Adjustable Brightness: This lamp have three lighting modes, white light, Blue light, full spectrum light; There are 10 light brightness options available in each color modes,10%-20%-30%-40%-50%-60%-70%-80%-90%-100%Time Funcation: Three time period timing,6H,10H,12H; Once the timing period is set, it will automatically cycle every day; For example, if the timer is set at 9:20 am for 6 hours, the lights will turn off at 15:20 am today and automatically turn on at 9:20 am the next day.Reduce your workload and ensure sufficient lighting time in the fish tank24/7 Sunrise and Sunset Mode: Only full spectrum mode and brightness cannot be adjusted; The light change is divided into four stages; Stage 1- the light brightness gradually increases from 5% to 100% within 3 hours; Stage 2-100% brightness for 6 hours; Stage 3- Light brightness decreases from 100% to 5% within 3 hours; Stage 4- Light changes from 5% full spectrum to 5% blue light mode and maintains for 4 hours, and finally turns off the lightDetachable Bracket: It can be suitable for any thickness of fish tank,fixed tightly and without damage to the glass acrylic etc fish tank; the lamp body and lamp holder are very flexible, and the length of the lamp extension can be adjusted freely; It can also be completely removed and placed on a fish tank with a transparent glass cover