The end loupe with cheap plastic lenses is a complete Fehlkostruktion! The Kunstoffglässer verkrazten according to any five minutes, since it is not possible, to fix the Kunstoffgläser, (they do not chafe each other) See a vernünstiges with 8-10 fold magnification is possible. (Distortions Strong, speigelungen) The device is without eingestetze batteries so heavy that one Kopfschmrzen gets. The "TÜV" should the sale of this Health Gefährdenen Arktikels forbid !!!