MARITIME ESSENTIAL: 8.5" Tide Clock special for fishermen, surfers, mariners, seaside property owners, and anyone who enjoys tracking the coastline tides, ensuring you always grasp the information where the tide condition is and when the tide is rising and ebbing. GEOGRAPHIC VERSATILITY: Tide clocks are recommended for use on the Atlantic Coasts of the United States and Canada. On the Atlantic they never need adjustment DURABLE DESIGN: Features colorful graphics for high and low tide, with a quality ABS plastic water-resistant case with a rear cover. The locking rear cover with a 3-point secure screw mount system allows mounting it on the wall; it holds the clock in place on your sea-bound vessel. TECHNICAL SPECIFICATIONS: Clock is approximately 8.5" in diameter and 1.6" deep, intended for indoor use. The clock requires one AA battery (not included). For optimal performance and longer lifespan, the use of a Carbon Zinc battery is recommended. PERFECT GIFT: Looking for an original idea? Birthday, Mother’s Day, Father’s Day, Valentine’s Day, Christmas. The Tide Clock is the perfect gift for ocean lovers. The key features of this tide clock include its colorful design, making it a visually appealing addition to any space. The clock features various modern graphic designs and is built to last with its water-resistant ABS plastic case and glass lens cover, protecting it from moisture and ensuring durability. One of the standout features of this tide clock is its easy-to-read display. It has a large dial hand that allows you to quickly glance at the clock and determine how many hours are remaining until the next high or low tide in your area. This feature is particularly useful for those living near the coast or engaging in water activities. The clock is designed for convenient installation with its secured wall mount. The twist-off back cover offers flexibility, allowing you to hang the clock on the wall or secure it with a 3-point secure screw mount system. This makes it an ideal choice for not only homes but also boats and recreational vehicles, ensuring that the clock stays in place even in motion. Furthermore, this tide clock is specifically recommended for use on the Atlantic Coasts of the United States and Canada. In these regions, the clock does not require any adjustment as it accurately tracks the tides. However, for Pacific coasts, including Hawaii, regular calibration may be necessary to ensure precise tide information. Overall, this tide clock combines functionality and style, making it a practical and decorative addition to coastal homes, boats, and recreational vehicles.