Thanks to all repliers . The tesoro warranty is unbeatable , I have tesoro tigershark ( really great underwater detector ) has noticed that it's pretty hot on small items , but not good for large iron items , I'm also hunting in WW II battlefields , so good sensitivity to items like steel german helmets - is very important for me , will tejon detect such helmet at 1 meter deep ? Will do the same X5 ? I have explorer II with 14.5 detech coil it's sensitivity impressive , but it weights too much , that's why I'm looking for another detector , and ID I don't need it so much.