Usage:HOLIDAY Model Number:SL-108 Base Type:R7S Protection Level:IP68 Light Source:LED Bulbs Body Material:ABS Certification:ce Voltage:6V Power Source:DC Application:Swimming Pool Is Bulbs Included:Yes Origin:Mainland China Item Type:Underwater Lights Brightness:Strong light 1200LM; Low light 300LM; SOS 450LM; Flash 3000LM Color temperature:7500K White light:JZ3535WC x 40 PCS Irradiation distance:underwater 1.5 M Irradiation angle:120 degree Life-span:50000 hours Diamension:125.4*129*32.35mm/67mm threaded interface. SL-108 Waterproof Ring Light Brightness: White(Strobe: max 1200lm; high 1200lm, low 300lm, SOS 450lm) Color temperature:7500K Beam angle:120 degree Depth rating:40m/130ft. Battery: build-in Li-ion battery(1800mAh) Burn time:1200lm/40mins;300lm/70mins; 450lm/70mins. Control methods: Buttons Dimensions:125.4×129×32.4mm Weight:200g Notes on SL-108 Circular Flash: This lamp is a fully enclosed combination, and there are two places to pay attention to: the charging port and fiber optic interface. Before use, it is important to ensure that these two places are fixed and the cover is tightly covered. If these two places are not paid attention to, it is very easy to get water because they are connected to the interior of the lamp. The advantage of this lamp is that it has a 67mm threaded interface, which supports all products with 67mm threaded interfaces, such as cameras, waterproof shells, lenses, mobile phones, etc. This type of lamp belongs to the category of macro fill lamps. Underwater close-up photography with white light, ultraviolet light, and organisms will not harm their eyes,