The intelligent safety LED Sensor Light of TaoTronics is about 300g easy and Requires 4 x D batteries that are not included. The working time of 12 hours at full state is absolutely sufficient since this corresponds ungefÃ'hr 2000 EinschaltvorgÃ'ngen. The sensoria is not programmable and betrÃ'gt 20s. The brightness of 300 lumens is enough fÃ'r my purpose from fully. In my case it finds its use in a dark corridor. Attached are three small screws and accompanies DÃ'bel. Very commendable. The correct size was ausgewÃ'hlt which is not often the case with enclosed mounting means. Commendable also is the Verstellungsmöglickeit Ã'ber two screws. Once to turn the lamp on foot and on the other to adjust the tilt angle. The possibility to mount the headlamp outdoors is also. Firstly, because no electrical outlets are Requires and secondly because it is waterproof to IP65. Thus, very good value LeistungsverhÃ'ltnis!