The 1280-X Features:

• Automatic turn-on-and-go operation.
• Salt water, fresh water or land use
• Leakproof to 250 feet.
• Up to 75 hours of battery life.
• Ignores small pieces of trash
• Patented quartz-crystal circuitry.
• Converts to belt mount.
• Audio and visual target response
• U.S. Patent 4,514,692