SEEMEE 300 Bike Taillight,300 Lumen Bike Tail Light,5 Night & Daytime Modes,Smart Brake Sensor IPX6 Waterproof USB-C Rechargeable Rear Bike Light for Night Riding

A rear bike light is all about being seen by other road users and this provides it better than anything I've ever used or seen. This includes projecting red light on the ground and rear wheel. Built to a high standard and easy to fit and remove for charging.

This light is fantastic, it is ultra bright with lots of functions and the battery is very good.

The best rear bike light I have ever had. Super-bright. Different settings. There is an option to leave the main light on, and a flashing light below that lights up the road behind the bike. It's a really good idea. Solid build, quality light.

Bright and lots of light programsThe lights pointing down is a great feature to enhance visibility day or especially at nightGreat valueEasy to installSo far robust and good time between chargeOnly minus is the unknown charge left on device- hence knowing it will last entirely for tripOtherwise im very happy

A higher price than I was intending to fork out but the light is very good and I have high hopes that its high waterproof rating will keep it from deteriorating.

Used it for a week and it never once left night mode. 300lumens? I don't know because even cycling at midday it is stuck in night mode, chewing through the battery, lighting the ground and weakly pulsing out back. Also never got more than about 2hours out of the battery. Even worse with the useless brake light feature activated.

This great rear bike light 'should' provide the luminescence necessary to make other road users aware of your presence. However, it can be too bright in the highest setting for some mardy motorists, who can become disgruntled. That said, it's better to be seen than not.

Item arrived with the front panel detached and it is not possible to reinstall it.Plainly not durable. Functionality appears otherwise okay?

Easy to install and very good quality.

This light has some very opinionated design decisions in the software, and to the product folks out there....if you're gonna be opinionated in your design, you're gonna get opinionated reviews.Buckle up, 'cause it's gonna get a little rough.The tl;dr: Excellent hardware that forces high power consumption on you, whether you want it or not, so that instead of up to 11hrs of battery life, you get 2-3 when riding in darkness. (And yes, this is a problem - I don't want to have to charge the battery every single day.)On the plus side: USB-C charging, excellent battery capacity; good battery life* in the mode I use most frequently; many modes; mode memory; quarter-twist mount.Now for that asterisk on the "good battery life": What I want out of a bike taillight is something that flashes stupid-bright so that the doofus in the car coming up behind me looking at their phone has something catch the corner of their eye and get their attention. And this does have an excellent daytime-bright flash mode. All good so far.The problem, though, is that once it starts to get even the slightest bit dark outside, it switches to this mode where it pulse-glows out the back and shines a bright red light directly to the pavement.At no time in my life have I worried about being hit by a car coming at me from below the surface of the pavement. I get that "provide visibility from the side" thing, but guess what - you extend the lens around the side of the housing a centimetre or so and that 300lm flash (that you turned off in favour of some slowly pulsing glow) gets people's attention."But it's too bright at night", you say? Impossible. Nothing is "too bright" for a bike to get noticed, particularly when it's red. Goal #1 through #20 is "get noticed".So, not only does the light go from a bright flashing "HERE I AM!!!" flash to a dull slowly pulsing light is that there's now TWO LED'S soaking up battery power, so the runtime of the light goes from 11hrs to maybe 3hrs at best. Yay (insert sarcasm emoji here).And if/when the battery does run low, instead of doing what it can to extend that runtime by....you know,....GOING TO THE FLASH MODE THAT LASTS FOR 11 HOURS, it instead glows even brighter so that you notice that your light is running low. Which....ok, great -- the light let you know. But what can you do about it for the remaining hour of riding until you get home...? Nothing.Just accept the fact that your light is gonna go out sooner than necessary.And then it has a brake light function: In theory, you hit the brakes on your bike, and the light shines brighter. There's no wire/sensor like there is on a car, of course, so it has to rely on some electronic sensor. So, I realize this isn't easy. But come on: If you're riding at like 35kph on flat road, peddling at 90rpm or whatever, if your speed varies between 35.8 and 35.5....the brake light should not come on. And yet it does - again just absolutely KILLING the battery life.The best part of all of these "features" is that MagicShine makes absolutely none of it configurable. If you WANT to just keep the low-power super-bright flasher going once it gets dark (and by "dark", I mean roughly half an hour before sunset on a clear day - why?!), instead of the light switching to the highest power consumption mode, well, go buy another light. Because this one won't let you.So I did.In short, this is a great light with TERRIBLE software.

The media could not be loaded. 眩しいくらいだから、最弱モードで、点滅で使っている、2～3回は充電なしで行けるし、何より、下を照らす、車幅灯が良い。軽いので、リヤはサス無しなら、重いタイプは壊れる、サドルの下に引っかけて、荒れた路面でも壊れていない、軽いからかな～～その割に目立ち、明るい！！

Very bright. The down light casts a large red glow all around the bike. Very bright on high. Smaller then I thought but works great.

I was very pleasantly surprised that it offered better visibility in the park where I ride. I normally had about one person per hour zip within inches of my handlebars when riding, This unit is as bright as it says and easily last 3-6 hours on the brightest settings. My only challenge was to fit it onto the aero-post on my Quintana-Roo. It took a tie wrap and some double-sided tape (to stabilize it) but it works great, clips in and out easily, I'm not sure, but I think it times out after 3-hours which should not be a problem for most rides, all I have to do is cycle the power button.