It is a bit difficult to put the batteries in the case on the first use (it's hard to pry, so you need to use the pin on the strap), but once they are in, the light turns on and immediately enters the rainbow mode. Usability This is one of the biggest frustrations we have with many headlights: a not so large headlight requires complicated click configurations to get to your desired setting, which can feel crazy if you walk around in the dark and just see the ground in front of you. The headlight is IPX4 rated, which means it is mostly dust-proof and resistant to water splashes; it cannot be immersed in water for long periods. The floodlight (again the spot was the only one of our picks to offer this) is ideal for robbing around in a tent or closet and illuminating everything you need to see with a far-reaching pattern. Many of the major brands we've tested for this guide, including Princeton Tec, Petzl and Black Diamond, have begun to adopt this standard in recent months, although it is still optional. Beam spread We took all the spotlights into a dark cabinet and compared their rays against each other on a white wall to check hot spots, light quality and beam size. For the children's headlights, we sent them to two very demanding children (who have been living with gear testers for years) and asked them to use the headlights for all kinds of adventures. Even at the highest level, the headlight remained bright throughout our 12-hour battery test — longer than the announced runtime — and we only had to charge it once for a few weeks. There is only one button to switch between settings for the front light: Normal (one click), Dim (hold down the button) and Strobe (three clicks). Another practical feature of the Snap is that it can stick to metal surfaces with its magnetic end, which we found particularly useful when working on household projects. We agree: for the price, this headlight provides everything you need, and we think it's a great option for most people who just want a reliable spotlight that lets them see clearly on projects to improve home improvement and illuminate the world at night on outdoor adventures . Compared to some other rechargeable headlights that require complicated click configurations to get to the desired setting, we found them easier, although we complained about the lack of a flood beam. Sure, they work better than the single button on previous models, but it still requires a lot of patience and trial-and-error to type through each setting and find the option you want. You can certainly find stronger headlights with better optics, but this takes the part of the Venn diagram where price, reliability, performance and ease of use overlap.) Essentially, the new standard sets out rules and procedures for measurement, including setting the clock stop point for the Runtime at the moment when the light reaches 10 percent of its original brightness. We were impressed by the relatively long burning time of the Sync and consider it a good value for money, but at the end of the day we prefer the Petzl Tikkina for its slimmer design and simple top button. But we also think that the storm is somewhat overbuilt for the average user, and it does not offer much more than what the spot already does, despite its increased price. Lumen counting does not say much about the actual light quality either: both the beam length and the shape have a stronger effect on the light output than on the lumen count. Finally, during a test run, we found that the beam was relatively useless because we couldn't tilt it down far enough to point to the ground in front of us. We carried them in the search for objects in the rear part of a dark cabinet and in the reorganization of a small room under the sink, in which only the light of the spotlight was used. Whether you're going backpacking, walking with your dog in the evening or camping with friends by car, a hands-free kit is an indispensable tool and is sure to become one of your favorite gadgets. We think that the Ledlenser would be great for spelunking, or craftsmen who see from a distance, but it would not be our go-to for typical backpacking trips because it is too heavy, bulky and expensive. Long-term tests by un.