Specification:
(Level 1) COB high light: 350 lumens, lighting time 2.5h-3h
(Level 2) COB low light: 130 lumens, lighting time 3.5h-4h
(Level 3) XPE high light: 120 lumens, lighting time 4h-4.5h
(Level 4) XPE low light: 50 lumens, lighting time 6h-6.5h