Well after 2 major surgeries I feel great and decided it was time to, "go" again. Went to the gun safe and pulled out the old X-70 (bought the first year they came out). Put batteries in her went outside and fired her up. It still worked like day one! I do have to confess it took a few minutes for the old brain cells to get up to speed. So, I charged up the old RS wireless headphones, (they also worked fine). Went out this morning for about an hour. Got a ring but, it had been hit by a mower. Newer token also. It sure felt good to be out digging holes again after 2 years.