Keeping in mind the very compact size, light weight and budget-friendly price, this little light is great for occasional/casual riders in relatively low-traffic areas. It's quite bright and visible for it's very modest price. I especially wanted/needed a belt-clip-style connection option, (which this light utilizes) I've currently got it set up on an under-seat bag to use in addition to another tail-light or as a backup if the other quit working for any reason. I especially appreciate that I could clip this small light to a jersey pocket or other item of clothing, either for cycling, OR for walking, or needing to do some road-side adjustments/repair for my off-bike safety. (For heavy traffic areas, or frequent rides in rain, dusk, after dark, a brighter light would be better, of course, but that's not really the intent for a light in this category)
It's better than I'd dared hope for my particular needs. I don't know anything about the seatpost attachment components, as the option I needed/use is the "belt clip" style attachment that's part of the light itself. I clip it to a webbing loop on the back/rear of my under-seat bag, and from that location, it gives an excellent view to traffic. I don't routinely ride after dark, but wanted this light for increased safety for daylight riding and into dusk on occasion. Especially for the modest price and light weight, I'm really impressed with how bright this tail-light is, and the several different types of "flashing" light options in addition to solid "on".
Hi -- the Lezyne Fusion Drive Pro 600+ Front Light is a good option. It has six settings (which is good), well engineered and strong, the smallish size in length and width is great, and the face of the light (5-led bulbs) gives good viability during the day and when I use it at night (which is often). This light is bright enough at night -- I never use the 600 lumen setting.
I am not a fan of the way this light attaches to the handle-bars, because you have to unhook the whole light in order to recharge it. I commute 5-days a week and find myself recharging this light about every 2.5 weeks.
I use this on nearly every ride, unless I'm purely on singletrack, and it's been so useful for detecting traffic that I can't imagine living without it. When my first one died after years of use, I bought another one the same day. It's especially helpful on gravel roads when it's hard to hear rear approaching drivers, and it's also invaluable when riding and chatting side by side, since it saves us from having to constantly look over our shoulders. Sometimes I think that drivers should buy these for all cyclists because we probably get over so much quicker, when appropriate.
