2 Pack USB Rechargeable LED Sports Armband Flashing Led Band Wrist Bracelets Arm Wrap Safety Light for Running Cycling

Light was quite good, but the overall construction was too poor.The connector on one of the bands was basically not connected to the board, so ended up pushed in and could not be charged. The other one was also loose.Returned.HAving brought similar from another listing at the same time, they appeared to be an extremely similar design/plastics, but better constructed - but that could just have been luck.

One worked fine, the other kept turning off. Not great quality switch or usb cover which also fell straight off of one of them. Can’t choose colours, it always cycles through the 7 colours quickly

The velcro strip is too short so I can't adjust the bracelet to my arm-leg size. The battery does not last long enough.

Perfect. Sturdier than other models. Note that negative reviewers may not have noted the plastic tab that protects battery from turning on in shipping.

比較的視認性はいいのですが、残念な点を。ゴムベルト、バックル等の部分がないため、実質的に長さ調節ができません。腕に巻く、というよりも腕に通す、といった感じの使い方になります。長さの調節ができればぴったりフィットなのですが腕や足に通しても動いているうちにズルズル落ちてきます。これが一番残念なところ。次に充電部分のゴムキャップ。これが非常にもろい。変に勘合しているため、充電しようとキャップをコジっているとキャップそのものが外れてしまいます。ケースに押し込もうとしてもキャップの抜け止めの部分が邪魔になり、なかなか入りません。ケースの隙間部分を少しコジって無理矢理押し込んで元に戻しました。先に書いたとおり視認性はなかなか良く、腕に通して、発光面を後ろ側にしてウォーキングに使っています。たまたまかもしれませんが、2個入りということでしたが1個しか箱に入っておらず、不足分を送ってもらっているところです。中国からの発送で時間がかかるようです。

Bon éclairage au départ mais devient très faible rapidement la batterie ne tient pas le coup après une pleine charge, le tout s'éteint après quelques minutes d'utilisation seulement malheureusement.

Update 2017.12.24: Both bracelet’s have broken, in less than 3 months of daily uses. I opened one of those to find that the LED is wired by tiny 30 gauge wires and poorly glued with cheap EVA probably... So not worth the price or the trouble.Old review below:I picked the green and blue. They both work well. When I use the blue in the flashing mode, drivers slow down even more. I don't think it is brighter, I just think some of them think there's a cop or something. Good for them!So the green one is typically used for 20min every day when walking the dog, on slow flashing mode, and being recharged avery 3 days, because we like it bright.The blue one is used when walking back from work, for 10 min in a poorly lit path, and has been recharged only once, i.e. after 12 days of use (one of these day had a 35 min walk instead of the typical 10 min).In both cases, I see that the intensity dims after 1.5h, but it is still bright enough for another 1h. Even after this 2.5h it still works, and will be a bit brighter at first, or when cycling it.They both charges quickly (less than an hour), and are easy to use.The velcro holds well. This winter with the winter jacket on, They should fit on my arm, but I don't think I will need to tighten them, they will be at their maximum extension