Humminbird XM 9 HW MSI T MEGA Side Imaging+ Transom Mount Transducer [710282-1] Communication | Loud Hailers This 1" diameter expension mast

This 1" diameter expension mast can be used to increase height of an antenna and thus improve effective range

A single plug in interface allows connectivity of GPS data

XPTH-9-HW-MSI-T MEGA SI+/DI+ Dual Spectrum CHIRP Plastic Thru-Hull Transducer with Temp

Marine's Smallest Waterproof Handheld - The IC-M85 is the smallest

It is full-sized and has sunshades

Humminbird XM 9 HW MSI T MEGA Side Imaging+ Transom Mount Transducer [710282-1] Communication | Loud Hailers This 1" diameter expension mastXM 9 HW MSI T MEGA Side Imaging+ Transom Mount Transducer MEGA Side Imaging+ Transom Mount Transducer supports MEGA Imaging+ 800kHz 455kHz and Dual Spectrum CHIRP 2D Sonar with a CHIRP range of 150 220kHz. Includes built in temperature sensor, all metal bracket and 20 cable. Features: This accessory is compatible with the following Humminbird products: HELIX 8 CHIRP MEGA SI+ GPS G3N, HELIX 9 CHIRP MEGA SI+ GPS G3N, HELIX 10 CHIRP MEGA SI+ GPS G3N,