The Waterpik SM-451 is a modern, wall-mounted shower set that includes a handheld shower head with 4 spray settings, including massage. The shower head is 5 inches in diameter and made of plastic with a matte finish. It has a flow rate of 9.5 liters per minute and features full body spray, slow massage, and pulsating massage. The shower head is suitable for use in the bathroom and conserves water. The SM-451 is a new and sealed product from Waterpik, a well-known manufacturer in the United States.