Blackburn 2.0 Flea Front and Rear USB Combo Pack
Micro size rechargeable Li-Ion powered tail light. Indicator LED shows battery capacity and charging. Uses four super-bright Nichia LEDs.
I use these on my commuter bike once or twice a week for the past several months. The battery life is enough my ~30min commute, and I don't typically have to charge the front light more than once a day. I haven't noticed any deterioration in battery life yet. The front light is not enough to be used as a headlight, I use it as a flasher. My rear light did sometimes has an issue making good contact for charging, but the indicator shows when it is charging so I can make sure it is charging. I would recommend these to someone who needs a set of bright flashers, but you will need a headlight also if you are riding without streetlights. Pros: -Small -Decent battery life -USB rechargeable -Bright for their size -Waterproof (they haven't failed me yet) Cons: -The mounting is terrible. They give you 2 Velcro straps that are too long for a standard handlebar. But clip on the rear light isn't too bad for mounting to a backpack or saddlebag. -Can only charge one at a time (only comes with one charger).
I've tried many different bike safety lights and this Blackburn Flea set (with USB charger) come out on top. The battery charges lasts a long time, especially when light is set to flash mode. Charging at work is easy (if you're at a computer all day), and these are durable. I've never had issues getting these completely soaked in the rain and they've lasted years of daily commuting. Although they're not necessarily bright enough to see with, they're definitely bright enough to get noticed with!
these little lights are named right, the flea. with the combo pack the front and back lights are provided and are a great combo to have. these things weigh nothing at all, and the charge quickly. they are a great for commuting or when a light weight light is needed for a road ride. they do charge quickly for a 5 hour ride. the bonus is that they have adjustable Velcro straps to place them around any sized bar or tube.