Viper Laser Throw Line Markers – Battery-Operated Precision Oche Lights in Multiple Styles

Great product, laser projects on the floor and is much cooler than tape on the floor. Getting it positioned correctly and having it tightened is tricky because it wants to move when tightening, but once you finally get it locked in at the right spot it does stay. Great product and excellent price!

Update to original review: I just now replaced the batteries after 5 months of using it basically every other day. Battery life far exceeded my expectations and it was still working, the line was just getting a bit dim. The batteries still had about 1.06 volts apiece left in them, but it's definitely brighter now that I replaced them. I haven't had any problems with this item, highly recommended. If you know how to measure from left and right side of the board and then use the hypotenuse from the bulls eye to verify your line, you can simply put tape on the floor temporarily to aim this laser (you likely already have tape on the floor). I didn't find this hard to aim, just tighten (or loosen in my case) the screws so that you can still move the laser, then tighten slightly. I mounted this about 6" below my dartboard, attached to my backboard. I was worried that vibrations from the board would throw the laser off but I've used it for 2 weeks now (I practice a lot) and it hasn't moved at all. I just verified all measurements are still correct after probably 2000 darts thrown to the board. I can't speak to durability from a direct hit from a dart to the laser. I don't plan on ever doing that but I'm sure it will happen sometime. Batteries have held up just fine thus far, I thought about buying the AC adapter but if these batteries last me a couple of months I'm fine with that in order to not have a cord cluttering the area up. This is better than the Winmau laser which sticks out from the wall quite a bit more, I have experience with that one as well.

The girl didn’t like the idea of an oche line in the middle of her floor, so I took a gamble on this. Very tricky to get both the pitch and distance dialed in, then have tightened down without the line moving. It will try your patience! Once you get it set though, it works really well. Very bright. Mounted mine a little lower (3 1/2’) than what’s pictured and it gave me about a 2 1/2’ long line. Laser is strong enough I imagine to be mounted anywhere and be good. Though the base and laser head seem solid, I worry anything more than a mild bump will knock the line out of place. All in all, great value for the money that solves a problem.

Very Cool addition to our dart board. Adjustable to the correct distance from wherever you mount it.

Works great.

This is awesome for anyone who enjoys playing darts. It is super easy to set up and the laser is bright!

This works and so I considered giving 4 stars but the setup was a bit frustrating and ridiculous.It mounted easily enough and it was lightweight enough to mount to my hollow wooden door without anchors. Due to the rotating nature of the laser you also didn't need it to be perfectly level to get the laser to be straight which is nice.My issue comes with setting up the laser to the precise line. The first time I set up the laser I had taken a few minutes to line it up and then I screwed down the screws to keep the laser positioned correctly. Seemed easy enough until I realized that screwing it down moved the laser up by a foot.If you line it up first then screwing it down will move the line. You can try to pinch the laser while you tighten the screw it will still move just a bit. If you tighten beforehand and try to adjust after, making the micro-adjustments necessary for precise alignment is a pain.Keep in mind that I did this by myself which makes it more difficult but my advice to people doing it on their own is measure out and then put an large book right behind the line. Then tighten down enough where the laser won't shake out of place but loose enough that you can make subtle changes to line up the laser precisely. The book will be a better reference point then just a tape measure on the ground but the hard part is finding the tension balance you need to line it up smoothly. It isn't impossible of course, just more of a pain than it should be.I would really like to see a type of scroll wheel you could use to make micro-adjustments after tightening the tension screws.So far it works well and although I have read some reviews saying that it is difficult to see in sunlight, I have found that it is manageable in all but the most sunny outdoor situations. I did put a fresh pair of eneloop batteries in so it's possible that even batteries with less charge would result in a duller less vibrant laser. Also regarding the batteries I have only used it for a few hours but will update the review once I have a better judgment on battery life.The laser is cool once it is setup but I think it is mostly unnecessary. It works well enough but I caution people when picking up bounce outs not to get a laser in the eye. Considering it seems of decent quality, isn't too expensive, and works I can recommend it if you really want a laser oche instead of using a adhesive tape line.Pictures description:The half carpet half hardwood picture shows the laser in good indoor CLT lighting.The marble picture is a close beam in good indoor fluorescent lighting on a light surface.The all hardwood picture shows the beam in a direct afternoon sunlight.

Looks good. Mounted on bottom of dart cabinet as to avoid eye exposure. Still new so no comment on battery life. As far as reviews saying it's not straight, it's completely adjustable so it can be straightened and any distance you choose. Solid purchase. Would recommend to friends.