For sale is a lightly used Shearwater Petrel 1 with slate attachment. Computer has 37 dives/29hr42min dive time. Bought as second owner as a backup for buddies and have not needed it. Latest firmware. Mount is removable. Sold with mount and Pelican 1200 case. $475 net to me, buyer pays any applicable PayPal fees. Pickup in Chicago or will split CONUS shipping.