Compact and powerful RGB Bi-Color light ring with 360 adjustable colors and a CRI of over 95% for true-to-life illumination of the subject. The free Android and iOS smartphone app "Rollei Lumen" allows for remote control of the Rollei Lumen Ring and simultaneous control of multiple LED Ring Light Lumen products. Portrait photography at night or product photography in remote locations is possible anytime and anywhere thanks to the interchangeable batteries. This is particularly exciting for users who film themselves and can use the app as a remote control to adjust the settings.