Material: The unit is made of PP material, ensuring longevity and easy portability for fishing trips. Depth range: Detects depths from 2 feet (0.6 meters) to 328 feet (100 meters) when fully submerged. Widely used: This portable depth finder is suitable for boat fishing, kayak fishing, sea fishing, ice fishing, and other fishing occasions. Features: Water handheld depth finder with a sonar that can be mounted on the hull of a kayak or boat, allowing you to track changes in water depth as you move. Benefits: Durable and lightweight design for easy transport; provides real time depth information to help you plan routes and select fishing spots based on depth; simple hull mounting for quick setup. Use scenarios: Kayak fishing: mount on the hull and monitor depth as you move along shorelines or toward dropoffs. Boat or sea fishing: install on the hull to keep track of depth while moving between fishing spots or while trolling. Ice fishing setups: use the portable depth finder in cold weather to understand depth variations and plan hole placement.