1. Hunt for coins, relics, jewelry, gold, and silver, etc. 2. Children use ground treasure search metal detector 3. Depth: 1m MD-3004 ... detector Detailed product informaiton: Under ground metal detector can hunt for coins, relics, jewelry, gold, and silver, etc. Just under ... : China Application:With md-3004 metal detector, you can hunt for coins, relics, jewelry, gold, and silver, etc.Just about ...