My Excalibur Sword will celebrate its 25th birthday this year and my Excalibur 1000 its 20th birthday (if my memory is correct). Neither have ever been anywhere but on my work bench for "tune ups" and repairs. The 1000 has seen two WOT coils wear out and has the original Sword horseshoe coil on it today. The Sword has the 10" coil form the 1000 on it. Just the way the WOT coils were installed. I can interchange the coils, but I don't mess with the original WOT waterproof pods unless I need to. If you keep a close eye on the cables, use coil covers, and basically take good care of the detectors they should last quite a long time. I have had split ear pad and battery cable failures, WOT coil failures and leaking Sword housing. I have replaced the O-rings and battery assemblies myself, not a task for the weak at heart or a person that is not very handy with tools and the understanding that what ever man put together, man can take apart, but it may never go back together again, and is willing to try anything once. Both of my Excailburs have many thousand hours in water, fresh and salt and have also traveled thousands of miles in search of fun and adventure. They have served me well and I trust they will continue to do so. The most frequent repair I do is to the ears on the coils. As they wear I rebuild them with PC7 a two part epoxy. and I replace the teardrop washers when needed or put a thin rubber washer between the shaft and teardrop washer to take up the wear on the teardrops. Two broken lower shafts, and I used the Whites Diver Rod kit for a straight shaft hip mount setup until going to CF over/under shaft, especially for traveling on airplanes. I just do not like the time without a detector for something I can fix. From what I have seen on the Excalibur O-rings and cables are the two failure areas. A drop of silicon oil on the O-rings will keep them going. I do not use the silicon paste as it tends to attract sand and dirt which can lead to a leak. The cables' outer insulation I have found to be quite good compared to other brands. I have seen and repaired several power connectors and one power connector cable. The battery pod requires the female contact to be cleaned with a Q-Tip every so often. Most important keep the rubber washer on the battery connector in good shape and NEVER use the detector under water without the 3-hole black rubber washer in place. Doing so can totally destroy the pods contacts and battery. Enough said...food for thought.