Garmin GT17M-THF SS Mid Band Chirp Transducer - 20 - 1kW - 8-Pin [010-02930-02] Marine Plumbing & Ventilation | Monitoring System Battery capacity range: 24-120 Ah 

Battery capacity range: 24-120 Ah&nbsp

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Users not wishing to install the PLB within a life jacket have the option to utilize the included webbing clip to attach the beacon to an appropriately sized belt or the webbing of an inherently buoyant life jacket

and then added IP67 immersion protection

Garmin GT17M-THF SS Mid Band Chirp Transducer - 20 - 1kW - 8-Pin [010-02930-02] Marine Plumbing & Ventilation | Monitoring System Battery capacity range: 24-120 Ah&nbspGT17M THF SS Mid Band Chirp Transducer 20 1kW 8 Pin Designed for reduced drag and optimum sonar performance on fishing and cruising boats, this flush mounted 1 kW mid band CHIRP (80165 kHz) transducer clearly defines fish arches, structure, and bottom depth returns on the display. Features: See maximum depth performance to 2,400 in freshwater Access CHIRP sonar frequency range from 80165 kHz Search with beamwidths of 918 degrees Count on fast response