18-INCH LARGE OUTDOOR CLOCK - The outdoor clocks waterproof design features a sealed front and rear to keep out moisture and dust. The 18-inch-diameter face has large numbers against a beige background for easy readability even from a long distance. ACCURATE THERMOMETER AND HYGROMETER - After being outdoors for 2 hours, the outdoor clock for pool area, patio, or porch displays temperature from -10 to 130°F (-23 to 54°C) and humidity from 0 to 99%, with Quartz movement for precise timekeeping. SILENT FOR INDOOR OR OUTDOOR USE - The silent non-ticking mechanism of this clock with temperature is perfect for both indoor and outdoor use, and easy to hang by your pool, deck, garden, patio, or shed, as well as inside your sunroom, office, or kitchen. ATTRACTIVE AND DURABLE - Our outside clocks for patios waterproof design features a face that will not curl from damp or sun exposure, a seal to keep the battery and movement mechanism dry, and a sturdy metal frame with an appealing brushed silver finish. PRODUCT DETAILS - Materials: Metal Base with Glass Lens. Dimensions: (W) 18" x (H) 2.5". Requires (1) AA Battery, Not Included (Carbon Zinc AA Battery is Recommended). Do Not Fully Submerge Outdoor Pool Clock. Color: Brushed Silver.