Dr.Stone – Key Art Wall Clock Officially Licensed: Official Dr. Stone clock manufactured by Great Eastern Entertainment. Anime Decor: Enhance the visual appeal of your home, living room, dining room, bedroom, dormitory, and other areas with this clock! Convenient Battery Operation: Powered by AA batteries, this clock can be easily recharged whenever needed. Its back panel also provides the flexibility to adjust the time. Great Gift Choice: This anime clock makes for a perfect gift for delighting anime enthusiasts and adding a touch of style to any space.