World’s Best Underwater Detector visit Minelab #2105. Minelab, the World’s Best Underwater Detector the design of the Excalibur II allows you to use it as effectively in or out of the water – this amphibious machine can move seamlessly from land, beach and wet sand conditions to underwater depths of up to 200ft 66m. Whether you are a long time diver or a casual beachcomber, the Excalibur II is unbeatable for ...