I have seen and read many rave reviews on the net but I must admit that this little lamp is totally bluffing! It's become both the smallest and most powerful lamp I have at home! I bought this model to have it permanently on my keychain "to troubleshoot" except that with its 27 lumens beats it flat sewing my Varta LED that works with 4 AA batteries, which cost me 30 euros and projects a pale and very tight beam that generates projected shadows. Inside, its wide, uniform beam light distribution without "smashing" the lighted area. Outside, same result with a very satisfactory effectiveness to 10m, beyond there may be something correct if there is no other lighting. It is very light and compact which makes the really integrated to a key ring without feeling free to lug home. My next will probably be a Fenix LD12 for the most demanding outdoor needs.