very compact, very solid and well designed appearance (radiator LED level), bright light with one AA battery 1.5V, circular illuminated area diameter 50 cm to 60 cm from the lamp. In addition, a front lens may slide forward to focus the beam and increase the range (30 m without problem): illuminated surface diameter of 7 cm to 60 cm from the lamp Very comfortable lighting (like the sun) but a power of 300 lm should suffice for remote courrte common use.