Fisher F11 Metal Detector with 11" Waterproof DD Coil

The Fisher F11 operates at a single frequency of 7.69 kHz, optimized for coin and jewelry detection. This mid-range frequency provides strong signal response on mid-conductivity targets like nickels, gold rings, and pull-tabs, while maintaining good depth on high-conductivity silver and copper coins. The 7.69 kHz frequency is a proven sweet spot for all-purpose hunting in parks, fields, and moderate beach conditions.

The Fisher F11's 11-inch DD coil and lower shaft are fully waterproof, allowing you to hunt in shallow water, wet sand, and rain. The control housing is splash-resistant only and should not be submerged. You can wade in the surf line and search creek beds with the coil underwater, but keep the control box above water level. This partial waterproofing is standard for land-based VLF detectors at this price point.

The Fisher F11 runs on four AA alkaline batteries, which are included in the box. Battery life varies based on your sensitivity and volume settings, so we recommend carrying a spare set of batteries in your dig pouch for long hunt days. Rechargeable NiMH AA batteries work well if you prefer to avoid single-use alkalines, providing reliable power for extended detecting sessions in the field.

The Fisher F11 offers three preset discrimination modes: Jewelry, Coin, and Artifact. Jewelry mode accepts a wide conductivity range to catch gold rings and chains. Coin mode notches out iron and low-conductors to focus on clad and silver coins. Artifact mode opens the window further to include brass buttons, lead bullets, and other relics. Each mode is a turn-on-and-go preset, eliminating the need for manual discrimination adjustments in the field. For dedicated coin work, compare our best metal detectors for coins guide.

The Fisher F11 weighs 2.3 lbs (1.04 kg) with the 11-inch DD coil and batteries installed. This ultra-lightweight design reduces arm and wrist fatigue during multi-hour coin shoots and relic hunts, making the F11 an excellent choice for younger detectorists, beginners, and anyone who values all-day comfort. The collapsible shaft and compact control housing contribute to the low overall weight without sacrificing structural rigidity.

The Fisher F11 ships with an 11-inch waterproof DD elliptical coil, which is the standard and only coil officially supported for this model. Fisher does not list additional coil options or upgrades for the F11 in their current accessory catalog. If you need coil versatility (smaller sniper coils for trashy sites, larger coils for depth), consider stepping up to the Fisher F22 or F44, which support multiple coil sizes.

The Fisher F11 comes with a five-year manufacturer warranty covering defects in materials and workmanship. This warranty is backed directly by Fisher's customer service and technical support facility in the United States. The five-year coverage is one of the longest in the entry-level detector segment and reflects Fisher's confidence in the F11's durability. Register your detector online after purchase to activate the warranty.

The Fisher F11 is an excellent choice for kids and beginners due to its lightweight 2.3 lb design, simplified three-mode interface, and turn-on-and-go operation. The 9-segment visual target ID with 4-tone audio provides clear feedback without overwhelming new users with complex settings. Parents often choose the F11 as a first detector for children ages 8 and up, thanks to its intuitive controls and comfortable handling. For more guidance, see our Fisher F11 kids guide.

The Fisher F11 excels at coin shooting, jewelry hunting, and relic recovery in parks, fields, and beaches. The 7.69 kHz frequency and three preset modes (Jewelry, Coin, Artifact) cover the conductivity range from nickels and gold rings up through silver coins and copper relics. The Coin mode's default discrimination notches out iron and foil, making it ideal for urban park hunts. The Artifact mode opens up for brass buttons and lead, so colonial site and Civil War relic hunters get productive results.

The Fisher F11 is proudly designed, engineered, and manufactured in the USA at Fisher's El Paso, Texas facility. Fisher has been building metal detectors in the United States since 1931, and the F11 continues that legacy with American quality control and field-tuned performance for North American soils. Domestic manufacturing also means faster warranty service and direct access to Fisher's specialized technical support team. Browse the full metal detectors $200–$400 range for similar USA-made options.