Highly impressive is the performance of this feathery little engine. The combination of spill and throw and the neutral light color very much. However, on the second day of the switching mechanism was broken (by rotating the head). The LED flickers in HI and MID mode as if she had a loose contact (shaking helps here but not).
When ordered for comparison purposes PD31 of the rotating mechanism is also unreliable, the lamp can be sometimes from the Turbo mode no longer switch back.
Conclusion: A fascinating product, but clearly overpriced. The manufacturer reputed reliability I can not confirm. Goods with comparable performance values there are in the Far East vendors to a quarter of the price.