The B744V is a TriducerÂ Multisensor featuring depth, speed, and Temperature in a single housing. The 50/200 kHz, dual-frequency, single, ceramic element provides great target detail in shallow water at 200 kHz and good deep-water bottom tracking at 50 kHz. The B744V is also available with a longer stem (B744VL) that may be needed for steep-deadrise vessels or thick cored-fiberglass or wood hulls.