If I had an acid opinion to the "solitary" brand model In contrast to this model there I have no negative! Even its size and weight can be, in case of bad meets night, be a great asset ... and weight! It is not for nothing the US military and police use it!. And even if the price reflects the robustness and longevity is not abusive to my eyes. With the LED going from approximately 10 to 80 hours of battery life! Recommend eyes closed (or almost)