Indoor/outdoor clock. Weather-resistant molded case, Champagne finish. Responsive lights automatically turn on/off from sundown to sunup. Sealed dial and clock resist moisture and humidity. Protective glass lens. Requires (1) AA battery for clock, (4) d batteries for power lamps, not included. NEW for 2024; Bulova has upgraded the time keeping movement in this clock to better withstand the Summertime heat and keep accurate time. While we never recommend having this product directly exposed to direct sunlight in desert conditions, our new movement has been developed to withstand higher internal temperatures than a Standard Quartz time keeping movement. High Heat Conditions can also affect the battery life