Since I already had a Fenix TK 35 with 860 lumens maximum output, but this sparsely began as the CR 123 batteries rarely available and very expensive, I have looked in detail for alternatives to the conventional AA batteries. After many hours of Internet research, I came across the NiteCore EA4 and had slammed shut. After the first practical assignments I have to say that the light output absolutely convinced and equipment (battery indicator, Total-off possible in order to avoid accidental activation) is excellent. DieTatsache that even Lithium AA (I use Energizer Lithium -. Amazon 4 St. for 6.29 EUR incl shipping) may be used and the flashlight can thus also be in the cold car perfected the whole. The only downer is the evil miefende after plasticizer China Cheap Holster - that does not fit so to this class processed lamp. That should NiteCore either replace or omit - in my view, can not be used. Stinks even after days still. After the lamp itself but actually 6 stars deserved, bleibts for me at the maximum achievable overall. Absolute buy recommendation! Have now a 2nd acquired for cars (EUR 79.90).