This 8x5.5 inch Double-D Eliptical coil can be underwater up to 16'.  It'll be great to snif out targets in trashy parks and old home sites or try it on unusally small area's like in row crop farm fields.  The M8 is lightweight coming in at .88 ounces, the cover skidplate is included.  We can't wait to see what you'll unearth with this one!