Lowrance electronic LCX-20C Graph recording, Audible alarms, Automatic ranging, Auto bottom track

Graph recording:	Up to 1 GB on one MMC (or SD) card
Audible alarms:	Deep/shallow/fish/zone.
Automatic ranging:	Yes, with instant screen updates.
Auto bottom track:	Yes
Zoom bottom track:	Yes.
Split-screen zoom:	Yes.
Surface water temp:	Yes, built into transducer.
Speed/distance log:	Yes, with optional speed sensor.
	GPS
Receiver/antenna:	External; LGC-2000.
Recording:	MMC & SD memory cards for recording GPS
	trip details and displaying charts or custom
	maps.
Background map:	Built-in custom, detailed Lowrance map.
	Contains: enhanced detail of continental U.S.
	and Hawaii.
Custom mapping:	MapCreate 6 software optional; optional
	plug and play LEI FreedomMaps offer the
	same high-detail without the computer work
	of MapCreate. Other plug and play mapping
	options include IMS Fishing Hot Spots,
	LEI NauticPaths charts and Navionics
	charts.
Mapping memory:	Up to 1 GB on one MMC (or SD) card.
Position updates:	Every second.
Position points:	1,000 waypoints; 1,000 event marker icons.
Audible alarms:	Arrival/off-course/anchor.
Symbols for
waypoints or icons:	42.
Routes:	100; up to 100 waypoints per route.
Plot Trails:	10 savable; up to 9,999 points per trail.
Zoom range:	37 ranges; 0.05 to 4,000 miles.

NOTE:

The above memory capacities refer only to the unit's on-board memory. The amount of GPS or sonar data you can record and save for recall later is only limited by the number of MMC cards you have.

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