4.2 inch search coil enables detection of small targets in a variety of hunting conditions. This compact coil is designed to help you identify small items that may be missed by larger coils, improving you detection accuracy in cluttered or challenging environments. IP68 waterproof design allows use in water, including diving scenarios. The coil is sealed for submerged operation, expanding your detection options to shallow dives and underwater exploration. Handheld, compact and lightweight construction makes handling easy and tracking steady. The small form factor reduces fatigue during extended searches and allows precise target localization. Three sensitivity levels provide flexible performance for different targets and environments. Adjusting sensitivity helps you distinguish between true targets and background noise, improving depth and target clarity. Use scenarios Underwater treasure hunting: dive in shallow waters to locate small metal targets near submerged structures or along the seabed. Beach and riverbank searches: scan sand, gravel, and shallow water edges for small coins, rings, or other jewelry. Garden, field, or wooded area searches: locate small metal items such as nails, screws, buttons, or other hidden targets beneath soil or leaf litter.