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This dual beam transducer replaces the one included with the Garmin echo series fishfinder. The 500W 4-pin transducer has an operating frequency of 77 to 200 kHz, a beamwidth of 45° to 15°, and mounts on a 0° to 70° transom. Transducer provides both depth and temperature data. Durable construction is designed to remain strong in a marine environment. Transducer kit comes with installation instructions.