LED Slim Cycle Light, Asahi Denki Kasei AHA-4311YD This is a rainproof type, so it can be used even in the rain. Continuous lighting: Approximately 30 hours, continuous flashing: Approximately 60 hours (when using Japanese alkaline batteries) By switching the switch, you can choose between continuous lighting and flashing. ● 0.3W white LED 1 light ● AAA batteries x 3 (sold separately) ● Material: Body / ABS resin, Lens / PS resin ● IP x 3 ● Brightness 24lm