This product is either discontinued or we cannot get that from suppliers.
Garmin 010-10272-10 Dual Frequency, Frequency: 77/200 kHz, Power: 500 W, Beamwidth: 45°/15°, Maximum depth: 1,900 ft, Number of pins: 4-pin, Cable length: 30 ft.
The Garmin 010-10272-10 Transom Mount transducer for with built-in temperature sensor is perfect for outboard boats under 25'. Complete with a Transom Mounting Bracket and 30' of cable.