They utilize 1200 KHz frequency (1.2 MHz) to get ultra-clear images on both side and down imaging sonar
For selecting the power rating to go with, it's best to go with a power that is in the recommended range for your reel of choice (range shown above in specs)
You can toggle between narrow and wide beam or view them side-by-side
You already know what the BG offers, the Socorro SW on the other hand has a full plastic body, side cover, and rotor, a handle that attaches via the ridiculous hexagonal shaft, a drag with 2 tiny washers, two less bearings, and the oscillation block is left to rub against the body
For suspending jerkbaits, use a 7-foot medium-light to medium rod with 12-pound-test fluorocarbon line, which sinks faster than monofilament and virtually disappears in the water