CafePress - Golden Ratio Math Clock Wall Clock - Unique Decorative 10" Wall Clock Our contemporary hanging wall clocks measure approximately 9.5" in diameter and feature a durable black plastic case and clear lens, with a modern quartz movement to keep you in style and on time. The unique printed face design looks great, and is sure to make your decorative wall clock the centerpiece of your home, office or kitchen wall. Treat yourself, or make this novelty clock the perfect gift for housewarming, Father's Day, Christmas, birthday, funny retirement, or for no reason at all! Precise quartz movement ensures accurate time. Requires one AA battery (included). IMPORTED. We offer 100% money back guarantee, so you can buy with confidence. Your satisfaction is our promise, and returns/exchanges are made easy.