Comparison between each models

HP-1001 Hand Held Meter Detector metal detector is very simple to use, hand held metal detector perfect for security check and home improvement

HP-1004 Hand Held Meter Detectormetal detector is upgraded version of HP1001, hand held metal detector for security check and home improvement, only $34.99

HP-1002 Basic Treasure Hunting Metal Detector metal very easy to learn, perfect for starter or kids to try treasure hunting, only $35.99

HP-1016 Explorer Treasure Hunting Metal Detector is entry level metal detector with basic discrimination feature, only $59.99

HP-1020 Explorer II Treasure Hunting Metal Detector upper mid level metal detector with more features and LCD display, only $89.99 (after $70 instant saving)

HP-1030 Navigator Treasure Hunting Metal Detector high end metal detector with more features and LCD display, only $179.99 (after $40 instant saving)

HP-1029 Deep Blue Treasure Hunting Metal Detector Fully waterproof, can be used up to 65 feet under the salt water or fresh water, only 249.99