Einsteinian Relativity Watch
Easy to read, and fun. A great new take on relativity. The numbers on this watch actually rotate with each passing second, making 3:00 into 9:00 in 30 seconds. The time is still easy to read, but it's more fun than just a regular, non-relative watch. Quartz movement. 1 year warranty. Recommended for ages 8 and older. More »