CYGOLITE Dash– 600 Pro, 520, 460 Lumen Bicycle Light Models– 5 Night & 3 Daytime Modes– Ultra Compact– IP64 Water Resistant– Sturdy Flexible Mount– USB Rechargeable– for Aero Road, Commuter Bicycles

I just received the Cygolite Dash 320 and was so overwhelmed by it that I had to share my initial impressions! My current headlight is the Serfas USL-5 Raider. My main use of these lights is to alert motorists of my presence while road cycling during the day. I use them in flashing/strobe mode to get their attention and hopefully decrease my risk of being hit. The Serfas Raider has been my go-to light for 5 years. I like its small size, light weight, good optics and impressive brightness for its size, and it's USB rechargeabilty. The Cygolite Dash has all these qualities as well but far surpasses the Serfas Raider in brightness, number of steady & flashing modes (seven!) and is still very compact and light. It fits easily on my handlebar without reducing the amount of space for my hands on the tops of the bar. The Dash mounts in seconds using a rubber elastic band and seems more secure than my Serfas Raider (which never fell off in years of use on some rough roads). The primary light modes which I expect to use the most are the Flashing Daytime Running Lights (DRL's) and the Day Lightning. The Flashing DRLs are 4 small LEDs on the top of the light, in flashing mode they are slightly brighter than the Serfas Raider LEDs and have a better flash pattern. But what distinguishes the Cygolite Dash as an impressively superior light apart from any other I've seen (of comparable size, weight) is the Day Lightning mode - 500 lumens of intermittent strobing of BOTH the DRLs and the Main 3 watt Cree LED beam! WOW is it BLINDING! Don't look directly at it when in this mode it's very bright. So given a chance to actually handle the light, mount it on my bike, and experience first hand all the modes of operation, I can unhesitantly most highly recommend it for daytime road riding as a brilliant (pun intended) way to get motorists attention! If you're looking for a compact, high powered, rechargeable DRL with numerous modes of operation that will shout for attention the Cygolite Dash 320 is a "10".

Perfect for daytime visibility and if you get caught riding in the dark. Not a substitute for more powerful lights made for nighttime riding. Small and light, very easy to attach and remove. With 8 modes you are bound to find a mode suitable for your conditions. Standard micro USB charging port. It remembers the last mode used when you turn it on.This is the only "rubber strap" light I could find that would attach to flat aero bars. A minor alteration was needed, though (see photo). A piece of rubber foam weatherstripping attached with an O-ring elevates the little hook so that the rubber strap is secure and the light is at the proper angle.Weight is spec'd at 75 grams. Mine is 79, pretty close.The instructions are minimal and disappointing. The box, which outlines the features, describes the modes vaguely but has them in the wrong order. There are two sets of lights: 1. An array of 4 at the top(quad); 2. A single, much larger light below the array (main). What does each set do in each mode? This:Name of mode/description/runtimeLow. Both sets on, constant. 10 hrsMedium. Both sets on, constant. 3 hrs.High. Both sets on, constant. 1.5 hrsSteady Pulse. Quad lights on, constant, main blinks 3 times. 3 hrs.Quad DRL Steady. Quad lights only, constant. 8.5 hrsQuad DRL Flashing. Quad lights only, blinks 3 times. 63DayLightning. Both sets blink 3x. 9 hrs.Boost. Double click the button in any mode to get the full 460 lumens. Both sets on constant. Click again to return to previous mode.Each single press of the button changes to the next mode.Double-press from any mode to enable turboDRL = Daytime Running LightsI use the DayLightning mode for daytime riding. The main light is quite powerful, and I believe this mode is your safest bet to be seen by approaching cars.

After a year of use of this combo set, I can say I'd gladly get another cygolite light set if I ever need a new one.Summer and winter, rain and sun, early morning or late afternoon, these lights still work just like the first day I got them.I've had zero major issues with Cygoligyt Dash Pro 600 and Hotrod 50 since I've owned them. Still great battery life for what they're intended for (can last at least 4 hours on some bike rides I do depending on settings), nothing has gotten lost or broken, its very compact, and is easy to take on and off.Its bright enough for nighttime and daytime use in your typical Urban / Suburban environment (that these light are good for) but dont expect it to be great for a rural outdoor trail (as a compact backup light, this can be a decent light for getting yourself back to home or to camp if your main light fails.)Only minor complaint I have, the usb charging plug/cover on the front light (dash pro 600). When it was new, I had the same issues as others have mentioned that the plug wasn't easy to reinsert into the usb charging port to keep water out.This has become easier over time thanks due constant use but it is an annoyance for new owners. (as you can see in my close-up photos, the cover is sitting flush in the port thanks to wear and tear. )Not a huge issue but it is something to keep a note if if your looking for rain/water resistant bike lights.(All but 1 photo was made just before writing this review, so you're all seeing what these lights look like after a year of use. Still had the original packaging so i did place them roughly where they were when i got them and at least show the run time per mode on each light according to what the box says (as its not fully show here on the product page).