The KORALAKIRI seed starter tray with grow light offers 3 lighting modes, 3 timer functions (3H/6H/12H), and 5 brightness modes (20%, 40%, 60%, 80%, and 100%) to meet the varying requirements of your plants at each stage of growth, and you can set it to turn on and off automatically as needed to take care of your plants even when you're not at home. The light supports AC/DC adapter power-on and USB plug-in.