Bottom Line Tournament 4300 FishFinder

I am selling the following:

BOTTOM LINE TOURNAMENT 4300 FISHFINDER
PRICE: 160.00
The Tournament 4300 is the perfect fish finder for the angler that
wants full functionality without all the bells and whistles. The
Tournament 4300 comes with Bottom's Line exclusive Sidefinder=AE
transducer. This single transducer provides highly detailed multiple
views to the bottom and side as well as temperature, depth and boat
speed, all at the same time. The 12.4 square inch screen with 76,800
pixels provides a crisp, clear picture. There is also a digital
battery voltage meter, 4-level greyscal, high resolution Supertwist
display, adjustable night light, 3200 watts of peak to peak power and
screen contrast adjustment. To round out the 4300 there is a zoom
bottom track, audible fish alarm, multi-level Fish D'Tect, digital
depth readout of individual fish.

Display:
12.4 square inch screen with 76,800 pixels
Displays side and bottom view simultaneously
Display water temperature, depth and boat speed
Specifications:
Digital battery voltage meter
4-level greyscale
high resolution Supertwist display
Adjustable night light
3200 watts or peak to peak power
Screen contrast adjustment
Zoom bottom track
Audible fish alarm
Multi-level Fish D'Tect
Digital depth readout of individual fish
Bottom Line one-year full warranty and a limited lifetime service
policy
Transducer cable is 20 feet long.

Transducer:
Multi-directional transducer

Bottom Line Tournament 4300 Fishfinder
Features:- Patented Sidefi nder Technology- Automatic Operation- High
Resolution Supertwist Display- 4 Level greyscale- Digital Water
temperature- Digital Battery Voltage Meter- Digital Boat Speed-
Multiview Screen- Zoom/Bottom Track- Adjustable Night light- Built in
Simulator- Digital Depth Readout- Rugged Sal****er Construction-
Multiview Fish D'Tect- Multiview Transducer with Built-in Speed and
Temperature- True View- Screen Contrast Adjustment- On-Screen Range
Scale- Automatic Gain Control- Audible Fish Alarm- High Speed
Performance- Digital Depth readout of Individual Fish- Shore Filter-
Auto Ranging- Background Noise Filter- Permanent Set-up Memory

Is the transducer a transom mount? or a thru hull?