Dimmable fill light: press the dimmer button to change the light colour: warm light, cold light, natural light. Long press the button to adjust the brightness from 1% to 100% to meet the needs of different situations. Double click to activate the SOS flash. Easy to carry: pocket size does not take up space in the school bag. Simply plug in your phone, iPad or laptop to capture high quality images and videos of every important moment in your life! USB powered: no battery required, can be used with most devices that support USB ports, e.g. laptops, PCs, power banks, USB chargers, power adapters etc. 90 minutes charging, 60 minutes in single light mode, 30 minutes in dual light mode (brightest gear). Multi-purpose - you can make videos at night or take selfies in dark places and also use them as torches, emergency lights, fill lights, make-up torch and more. Compatibility: as long as your device is less than 0.59 inches (15 mm) thick, our selfie light is suitable for almost all mobile phones available on the market.