... uses energy-saving design, it is light and soft, and can automatically adjust ... set the time interval (from 1 to 60 minutes)3.Lamp function: at night, ... , classroom, bus stations, train stations, subway stations5.AC / DC adapter, transformer support 100-240V, 50 ... size(L*W*H)242*85*56mm/9.5*3.3*2.2inchPackage12pcsPacked byCarton ... 6*3.5*2.2inch Digital Large Big Jumbo LED wall desk alarm with world time ...