Review on Advanced Humminbird 440440-1 688ci HD Internal GPS/Sonar Combo Fishfinder (Black) - The Perfect Fishing Companion! by Andre Motko
GPS performance was an issue
Initially had long acquisition times and constant loss of signal with loss of track data if not saved frequently. There were issues, but Humminbird's customer service pulled through. Many Thanks.
- Output power (max): 500W (RMS); 4000 watts (peak to peak)
- Everything OK
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