This guide is for general information only and is not legal advice. Laws change — verify current rules with your state DOT or a licensed attorney before relying on this for any legal matter. Read full disclaimer.
The rule
Nevada requires lamp on the front emitting a white light visible from a distance of at least 500 feet to the front, required during the times described in nrs 484a.480 (between sunset and sunrise and at any other time when visibility is reduced). For the rear, red reflector on the rear of a type approved by the nevada department of motor vehicles, visible from all distances from 50 feet to 300 feet when directly in front of lawful lower-beam headlamps. a red rear lamp visible from the same distance may be used in addition to the reflector. The rule applies whenever it is dark. See NRS 484B.783 (Equipment on bicycles).
The cheapest way to stay legal in Nevada is a USB-rechargeable front white light and a rear red light or reflector that meets the spec above. A $30 light set covers it.