Dual Spectrum CHIRP: With a powerful Low-Q CHIRP transducer, provides crystal-clear returns, exceptional target separation and amazing fish arches. Can reach depths up to 1,200' with the standard transducer or 3,500' (with optional 50 kHz tansducer). AutoChart Live: Create real-time maps of your spots, with access to Humminbird® LakeMaster® features. Map depth contours, bottom hardness and vegetation. 8 hours of recording time, it is compatible with AutoChart Zero Line SD cards for virtually-endless capacity. Premium chart compatible: Optional charts from Humminbird's LakeMaster® and CoastMaster™ products, as well as compatible Navionics® charts. LM Versions - Internal GPS and Humminbird Basemap: Canada LakeMaster version includes LakeMaster V1 Canada East Chart. Enhanced basemap for a clear view of underwater terrain and surrounding points of interest. Identify buoys, day markers, hazards, marinas, contours, depth markers and much more.