I have a Shearwater Petrel EXT (Fishcer connector) that is just over 2yrs old. Has 131 dives recorded on it. Computer has 1 noticeable scratch on the screen protector & a few normal wear & tear scratches. It has been an excellent computer with the latest firmwear v 18.aes update installed on it (has the recreational mode settings). I am going to upgrade my Prism2 to the digital Dive Can, this petrel is analog & would not be compatible with the upgrade. Asking $800 + S & H. I am the computer's 1st & only owner.