The increase in bike commuting has driven, and also been driven by, bike light development. Light and Motion has been a force behind increasing options, pushing higher quality standards, ease of use, and powerful, affordable lighting systems. Your first goal when commuting or riding at night is to "be seen" and from behind the key is have a light bright enough from long range, but preferably with options that break up the patterns that other road users see. Some lights use a flash or pulse system, and some offer a constant/ steady projection. The ideal light for serious commuters offers all of the options- pulse, steady, and both.
The Vis Micro tail light is a terrific rear facing light with a 25 Lumen output and 180 degree visibility. Three settings expand your run time and give you the options of a pulsing flash, or a steady light. The Vis Micro has a specially designed reflector system to carry the dual LED lighting to max effect over the 180 degree range. The lower amber light flashes in all settings, and is projected rear and the sides. The upper red LED focuses its pulse or steady beam directly behind, for max visibility at distance. The High setting (pulsing flash) will deliver those 25 Lumens for 6 hours from full charge. The Medium setting drives 25 Lumens in solid light for 4 hours, and the Low goes back to pulse for 12 hours at 13 Lumens. The USB rechargeable integrated battery charges in 2.5 hours.