The power is 100 lumens is ~ 10-15 W, and in the night before a gate (entrance / stairs / path), it's perfect. You can see his keys, an inscription on a door or doorbell, etc ...
Very good detection 3m range and 120 degrees (not 180 degrees)
Recharging requires daylight (no need to be in the sun, my sensor is hidden by the trees above, but that's enough). My dad has a similar lamp, and under eaves, charging is also excellent, including with clouds.
This model is more aggressive to the eye (not diffuse light) that the model TaoTronics Solar Lamp to 16 LED Motion Sensor (Battery 900 mAh, distance 3 meters, 12 hours of battery life) - Silver
Its range is greater (4-5 m I would say for detection)
Do not forget to turn on the lamp by pressing a paper clip or small rod provided, in a small hole that contains a switch (to be done once at installation).