KR 90 Ring Light Professional ring light with 30 three-chip high performance LEDs. Extremely wide angle of radiation of 110° (half-value angle). Lithium-ion battery (operating time 2 hours). Dimmable. Colour temperature 5500 K +/- 500 K. The basic connection thread is 77 mm, several adapter rings from 52 to 72 mm are included as well as a quick charger and car charger cable. Tripod thread 1/4".