The "glow" from the luminous materials in our timepieces will last depending on the type of light the watch is exposed to. It also depends on the number of luminous materials on the dial and hands. On average the glow will last from about 15-30 minutes in a dark setting.
Unlike radioactive materials that are used by some companies, the non-radioactive materials we use do not have a constant level of "light emission". This results in a very "bright" glow shortly after light exposure that diminishes over a period of time. When the two materials are compared side by side, the level of light emitted is the same.
To find Citizen timepieces with luminous or "glow in the dark" hands, simply type "luminous" in the search bar in the upper right corner, or select "Luminous hands/markers" when filtering by "Features."