Warning: Pic Heavy.
I was looking for a set of lights for the wife and I, and the Satechi RideMate 500 head / tail light seemed to be the best priced combo per lumen. The Cygolite metro 550 and or NiteRider lumia 500 + tail light combo was about $25.00 more per pair, costing an additional $50.00. I bought the combo on Amazon for ~ $75.00.
First up is the tail light. The packaging is pretty bare, you'll get the light, and USB cable, and nothing else. The claimed battery size is 540 mAh, and has three modes; bright, medium, and flash. The stated run time for bright is 3 hours, while the rated run time for medium and flash is 6 hours. The light recharges through the USB port, and requires 2.5 hours to charge from full depletion.
The USB port is covered by a rubber tab, as shown in the last picture. The light itself seems very solid, everything fits seamlessly, the electronics I can see look well soldered, ect... The rubber mount twists so that the light can be mounted vertically or horizontally. The included cable fits, but only just barely. If you have a micro USB cable for a cell phone that has a smaller bit of plastic surrounding the plug itself, it would probably work better. The included cable is also short, 9 inches. The light is light enough to let dangle from a USB port without harm though.
The light is rated for 26 lumens, but honestly that seems a bit low, from what I've seen. It's very bright on bright, enough to be seen from anywhere. It would be annoying to ride behind, that kind of bright. The medium setting is a little more behaved, but still very bright. I wish they would have included a low setting, or at least a low flash. The flash mode is the full brightness, but flashing. It's not something I would ride behind, unless forced. The rubber mount seems sturdy enough. Here is a pic of the light mounted to the bike, in vertical mode. More pics of the light on later.