• No. 1 brightness for Panasonic battery operated lights (all light colors at maximum brightness (800 lm) as standardized by SBA S1601. As of March 15, 2023; Battery Life: Approx. 8 hours (when using Evolta NEO). For products with a maximum brightness of approximately 800 lm, there are also products that do not have USB input and output function (BF-BL40K-W) • Touch sensor for easy operation. Brightness (dimming) is stepless, and the light color (toning) can be adjusted to 3 levels (white, bulb color, and all light colors) • Uses USB input and output terminals. (Input: USB C / Output: USB A type, USB cord is not included. ) • Automatically lights up when a power outage is detected, so it is useful in times of power outages or disasters. (You must connect it to a power supply with batteries installed) • Uses Evoltano batteries: White, light bulb; Maximum brightness: Approx. 16 continuous hours; Minimum brightness: Approx. 1,500 continuous hours; All light colors (white + bulb color); Maximum brightness: Approx. 8 hours; Minimum brightness: Approx. 1,000 hours continuous (Uses battery Evolta battery); Maximum brightness: Approx. 14 hours continuous; Minimum brightness: Approx. 1,350 hours total. Light Color (White+ Bulb color: Maximum brightness: Approx. 7 continuous hours; Minimum brightness: Approx. 900 hours continuous (Uses alkaline batteries); White, Bulb color: Maximum brightness: Approx. 12 hours continuous; Minimum brightness: Approx. 1100 hours continuous; All light colors (white + light white); Maximum brightness: Approx. 6 hours continuous; Minimum brightness: Approx. 700 hours