Sentinel 250 w/Laser Lane Lines LED Rear Bike Light USB Rechargeable IP64 Rated Bicycle Tail Light Bright Daylight Visible Easy to Install Road Mountain City Commuting Cycling Safety Flash

This bike safety light is great. What’s most important is that it is extremely bright and you have several different settings to choose. Which ever you think will be most noticeable by people who are driving a car

I really like the laser lanes, however, another rider with me says it's a unnecessary distraction that may cause people to drift towards me as they try to figure out what it is. That's a bonefide point, however, I like it nonetheless. Make your decision for yourself, I like the laser lanes.I have learned that the super bright mode is too bright at night when other riders are behind you. That is indisputable. Plus, I am told that it is probably tweaking some of the drivers of vehicles off. At the same time however, allot of vehicles change lanes to get away from me than ever before - even though I am on an 11 foot wide shoulder. And that is good, because I am being noticed. And bad, if someone wants to take me to task for the bright light. A double edged sword. There are "wolves" in the people world. These human wolves are evil, unlike their honorable canine counterparts.There are a number of modes to choose from while riding. Choose your mode based on the riders around you, width and number or lanes, shoulder width, volume of traffic and lighting conditions. You may want to consider using the brightest red mode for the daylight only. You never know when that one angry person in a bad mode wants to take you on. Bottom line, I love the light. Just consider the double edged sword concept.

I've had lots of flashing rear lights, and most of them last for weeks on a pair of AA batteries. This thing, flashing (not on steady, and not including the two laser beams) only lasts for one hour and the charge indicator says it's dying. Pathetic!I love the two laser beams that skirt the bicycle and people have actually stopped me to ask how I do that, so obviously it's a pretty bright light. See attached photos.If it wasn't for the cool laser beams, I would rate this about two stars for the terrible battery life.The controls are a pain for someone with big fingers, or wearing cold weather gloves. The two functions are side by side so it's easy to hit the wrong one, then you have to cycle through the functions and hold it down to turn it off. You shouldn't need an engineering degree to operate a flashing rear light! K.I.S.S.!The mounting is just okay. You can hang it from your seat bag, or you can mount it from your seat post. One of my seat bags doesn't have a little place to clip it and there's no room to mount it to the seat post, so of course I can't use it on that bike. The seat post mount is kind of bulky.Don't get me wrong, I've been using NiteRider lights for a long time, but based on my recent experience the current generation is not as robust as the ones we could get some years back.

I was biking home one day and noticed how bright and noticeable the rider's tail light ahead of me was. When stopped, I asked which light it was and immediately purchased one.This light is a little pricey for a tail light but well worth. I invested in a really good front light but was not willing to spend too much on a tail light because I had never seen one that seemed worth it. This light changed my mind.This light has 7 modes although I usually use just 1 of them. 3 of the modes also let you project red lines along the side of the bicycle but I am not sure how valueable that is; I have not used it yet.

So I couldn't say enough how much I absolutely love this light. It's plenty bright and can be seen for a long ways away. The battery life is exceptional. But I've lost two of these lights in the past year as they have fallen out of their mount. It seems the plastic doesn't hold in forever and you'll look at it and it will be gone. This is the only reason I'm not giving it 5 stars. As I am now missing my lightUpdate. Found the light. Still great. Not a good mount

I am disappointed with the unit overall. While it is bright and the laser option useful, the very short battery life and poorly designed clamping attachment do not rate highly. I had to modify the mounting clamp by cutting off the rubber straps, drilling holes in the plastic frame & fastening the light to the rear rack of my bike with zip ties. An ugly but functional approach. The battery lasts <1.0 hours on high setting, and recharging takes about 3 hours (using a 2.0 Amp charger). I would not recommend this light for anything other than a short duration riding secession.

Lane indicators are great. plenty of modes depending on how much attention u d like to get from traffic. Best tail light I came across. Be nice if it had different mounting options then just a clip in

Love this taillight. doesn't do a solid 250 Lumen intensity but it has 2 nice full intensity flashing modes. the Laser lanes are sick! i use this routinely on my scooter rides and get a good 2 hours on bright flashing mode and more hours on group mode (non flashing).

Esta lámpara es un gran producto para el ciclista urbano y para las veredas. La construcción es bastante sólida aunque la liga para sujetarlo al poste del asiento pudiera dañarse a los pocos meses de uso. Me gustan mas los soportes atornillados.La iluminación es muy notable en el modo de luz intensa y los lasers para el piso llaman mucho la atención a otros ciclistas y algunos automovilistas de noche.Tarda unas 3 horas en cargar y la carga dura para unas 3 o 4 horas de uso. Hay que estar atentos de salir con carga suficiente. Recomendable al 100%

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