The "PreFokus" reflector sounds better than it is. It simply is a non-adjustable reflector with light spot in center. Externally, the brightness decreases rapidly, only to interfere outside yet with halos. However, the torch may well be regarded as efficient, the LED used has a poor color reproduction.
Sorry, no batteries are included. Necessary are 3x C batteries (baby cells).
The on / off switch is at the end of the lamp, so that one-handed operation or rapid switching is not possible.
In the LED, there are 10 year performance warranty, but for the rest (eg, switches or electronic) only one measly year, less than the statutory warranty.
I would not buy the product at that price again and have decided on a return.