This beautiful and elegant clock’s design is based on what clocks measure, cycles. Minimalist icons for each season mark the standard 3, 6, 9, 12 on the dial, while the famous Sphinx riddle and stages of human life run around the interior. Measuring 12" round to match the 12 hours of its face, the clock is made of durable plexi. Requires 1 AA battery. Makes a striking and unusual gift.