These both are like new. The 1100 serial number on the cz 70 seems to be the one that can hunt with 6 sensitivity instead of the usual 4. Both are deep units and the 70 pro I am the 2nd owner. Only gonna sell one and keep the other. Makes no difference which one I keep as they both are great. Bottom of coil has bed liner spray instead of cover as I was told that works best.. e mail with any questions