Originally Posted by the sci guy

taillight: PDW radbot 1000. takes AAA batteries. includes a reflector. very bright red LED with solid/pulse/normal flash settings. small, simple, works fantastic. i think it was $30 on amazon.

headlight: serfas thunderbolt. recharges via USB. solid + flash settings for both high and low beams. high beam flash is blinding. downside is you'll need to charge if you use highbeam for a few hours on a single ride. low beam has longer life, obvi. also light is more for being noticed, than illuminating dark road ahead.