Nokta KR13 5" DD Waterproof Coil for Kruzer & Anfibio Series

The Nokta KR13 5" DD coil is a compact waterproof search coil built for the Kruzer and Anfibio detector series, engineered to isolate small targets in heavy trash and detect shallow metals that larger coils miss. Kruzer and Anfibio owners working trashy parks, swimming areas, and iron-laden soil gain precise target separation and enhanced sensitivity to small gold and coins from the 5-inch footprint. The DD configuration maintains ground balance in mineralized conditions while the reduced size lets you work around playground equipment and between rocks.

What's Included with the Nokta KR13 5" DD Coil

• Nokta KR13 5" DD Waterproof Coil for Kruzer & Anfibio
• Nokta KR13 5" DD Coil Cover and hardware

Optimizing the 5" DD Coil in the Field

Because a 5-inch search coil features a tighter electromagnetic field, your sweep speed should be adjusted accordingly. We recommend slowing down your swing speed in high-trash environments to give your Kruzer or Anfibio processor ample time to recover between targets. Overlap your swings by roughly 50% to ensure thorough coverage of the ground matrix, as the compact footprint sacrifices coverage area in exchange for unmatched target separation precision.

Why Kruzer and Anfibio Owners Reach for the KR13 5" Coil

• Enhanced sensitivity to small and shallow targets that larger coils overlook in trashy sites
• Superior target separation in bottle-cap and pull-tab zones where larger coils mask good signals
• Fully waterproof construction for beach hunting and water detecting
• Compact 5-inch DD design for tight spaces and detailed searching around obstacles
• Direct compatibility with all Kruzer and Anfibio series detectors with no additional setup

Tight Target Separation in Trashy Parks and Swimming Areas

Trashy Parks with Bottle Caps and Pull Tabs

The KR13 5" coil isolates individual targets in sites where your larger coil returns overlapping signals. We run this coil in urban parks with decades of trash accumulation, and the reduced footprint lets us pick out silver dimes masked by aluminum. The DD configuration holds ground balance in mineralized soil while the 5-inch diameter separates a wheat penny from an adjacent bottle cap. You'll cover less ground per swing, but recovery rate climbs when every signal is a distinct target.

Beach Hunting for Small Gold Jewelry

Small gold chains and studs generate weak signals that larger coils miss in wet sand. The KR13 delivers consistent performance in swimming areas where targets concentrate in a narrow band. Our team works the waterline with this coil after summer weekends, and the waterproof construction handles full submersion without performance loss. The compact size maneuvers between beach blankets and around lifeguard stands where a larger coil feels clumsy.

Iron-Laden Soil and Mineralized Ground

The DD configuration provides excellent ground balance in red clay and black sand where concentric coils struggle. We've used the KR13 in Civil War sites with high iron content, and the coil maintains sensitivity to small targets while providing discrimination. The 5-inch footprint reduces ground coverage but improves depth on small targets in mineralized conditions. Pair this coil with manual ground balance for maximum stability.

Specifications

• Compatibility: Nokta Kruzer, Multi-Kruzer, Anfibio 14 kHz, Anfibio 19 kHz, Anfibio Multi
• Coil Size: 5 inches
• Coil Configuration: DD (Double-D)
• Waterproof Rating: Fully waterproof
• Cable Type: Wired

Why Buy from Serious Detecting

We're an authorized Nokta dealer, and every KR13 coil ships with the manufacturer warranty. Our team runs Kruzer and Anfibio detectors in the field, and we've tested this coil in trashy parks and wet sand to confirm the target-separation claims. You'll get free shipping, 30-day returns, and our price-match guarantee. Browse our full selection of metal detector search coils or explore round metal detector search coils for alternatives. For technical background on DD versus concentric designs, see our guide to metal detector technologies.