GVO Marine Electronics: We provide reliable, safe online shopping 24 hours a day, 7 days a week throughout the U.S. and the world. We are strongly committed to providing our customers with top quality merchandise and world class service. Model 73649 XTM-9-HW-MSI-T MEGA SI+/DI+ Dual Spectrum CHIRP Trolling Motor Transducer with Temp MEGA Side Imaging+ Trolling Motor Transducer supports MEGA Imaging+/800kHz/455kHz and Dual Spectrum CHIRP 2D Sonar with a CHIRP range of 150-220kHz. Includes built-in temperature sensor, rugged composite design, trolling motor mounting hardware 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, HELIX 12 CHIRP MEGA SI+ GPS G3N. Dual Spectrum CHIRP Frequencies: Full: 150-220 kHz, Narrow: 180-240 kHz, Wide: 140-200 kHz Dual Spectrum CHIRP Max Depth: 1200ft (365m) MEGA Side Imaging+ Frequencies - Max Range (side-to-side): 455kHz: 440-500 kHz - 800ft (244m), 800kHz: 790-850 kHz - 250ft (76m), MEGA SI+: 1075-1150 kHz - 400ft (m) MEGA Down Imaging+ Frequencies - Max Depth: 455kHz: 440-500 kHz - 400ft (122m), 800kHz: 790-850 kHz - 125ft (38m), MEGA DI+: 1075-1150 kHz - 200ft (61m) GVO Marine Electronics: . Get the item you ordered or get your money back. Covers your purchase price and original shipping.