Actual depth capabilities depend on transducer configuration and installation, bottom composition and water conditions. All sonar units typically read deeper in fresh water than salt water.

Garmin Fishfinder 160C c/w Transom Transducer RRP is £179.99 Price: £189.99

Garmin Fishfinder 400C Display RRP is £289.99 Price: £233.74

Garmin Fishfinder 400C c/w Transom Transducer Dual Frequency RRP is £299.99 Price: £280.49