The lamp is built low and has good holding power of the magnet. The build quality is fine. 2 light modes are selectable interval flashes and all-round running light of the LEDs. In the dark, the luminosity at some distance is mediocre, barely perceptible in daylight. But what you want at this price - strong LEDs cost something. For professional use, such as working with machines in public places therefore not really suitable. As a warning light on the tractor when driving at night, for example, with large trailers and heavy / bulky load the light is in order.