The HELIX 5 CHIRP DI GPS G2 with our new user interface and operating system, features a brilliant 800H x 480V, 5" 256 color display with backlight. CHIRP Down Imaging and DualBeam PLUS sonar with 4000 watts PTP power output, Precision Internal GPS Chartplotting with built-in UniMap cartography with a micro SD card slot for optional maps or for saving waypoints. Maximize your angling experience with the Humminbird HELIX 5 CHIRP DI GPS fishfinder GPS system. CHIRP Frequencies (Out of Box Transducer) 455 kHz:  420-520 kHz 800 kHz:  790-850 kHz Maximum Depth:  600 feet CHIRP Frequencies (Optional Purchase Transducer) Low: 28-75 kHz Med: 75-155 kHz High: 130-250 kHz 83/200: 75-155/130-250 50/200: 28-75/130-250 Maximum Depth:  2500 feet Display Size - Diagonal:5" Display Pixel Matrix:800H x 480V Display Type:Color TFT Display Colors Grayscale:16-bit Sonar Standard:CHIRP/Down Imaging/Dual Beam PLUS Standard Sonar Coverage:16°, 28°, 45° & 75° @ -10db Standard Sonar Frequency:200/455/800 kHz Sonar Optional:50kHz, 50/Low Airmar CHIRP Target Separation:2.5" Power Output RMS:500 Watts Power Output Peak to Peak:4000 Watts Depth Capability:350 ft (DI), 600 ft, 2500 ft* Temperature:Built-In Transducer Speed:GPS Speed Included Backlight:LED Unit Size - Gimbal Mount:7.55"W x 4.64"H x 3.3"D Mount A Type:Gimbal Mount Unit Size - Indash Mount:7.55"W x 4.28"H x 1.13"D Mounting Options:In-Dash Mount Transducer Standard:XNT 9 DI T Transducer Mounting:Transom Power Input:10.8-20 VDC Power Draw:600 mA GPS Receiver:Included GPS Tracking:Included GPS Chartplotting:Included Waypoints, Routes, Tracks/Points:2,750, 47, 50/20,000 Humminbird Mapping:Optional Navionics+:Optional Navionics Platinum+:Optional SwitchFire Sonar:Included Humminbird PC:Included Upgradable Internal Software:Included Split Screen Zoom:Included Split Screen Bottom Lock:Included Large Digits View:Included Wide/Narrow Cone Split Screen:Included Custom View Selections:Included Custom Digital Readout:Included Temperature Alarm:Included Freeze Frame:Included Instant Image Update:Included Selective Fish ID+:Included Real Time Sonar:Included Triplog:Optional X-Press Menu System:Included MMC Others:Micro SD Card Reader Available:Yes # Card Slots:1