B785C-M CHIRP Bronze Thru-Hull w/Fairing Block - 600WFeatures: Thru-hull bronze model with fairing; Same physical size as a B744V ; 600W power rating; Depth and fast-response water temperature sensor; Available only in the Medium frequency band (M : 80-130kHz) with bare wire cable; This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. - cis2:mm5mnJlm -Specifications: Mounting Style: Thru-Hull; Chirp: Medium; Box Dimensions: 4"H x 12"W x 16"L WT: 7.2 lbs; UPC: 801769002027; Owner's Manual (pdf)