Get real answers from outdoor explorers and our product experts. Browse questions about performance, features, and setup — or ask your own to make sure this gear fits your next adventure.
The MarsMD 7 inch DD coil (sold as the Lion 7) is a Double-D search coil measuring 7 inch (18 cm), in the version made for the Fisher F2 and F4. MarsMD made its 7 inch coil for challenging places: it is lightweight and compact, and it picks out non-ferrous targets even in very trashy areas.
| Configuration | |
|---|---|
| Coil | Lion 7, 7 in |
| Type | Double-D (DD) |
| Fits | Fisher F2, F4 |
| Waterproof | Yes |
What is in the box with the Lion 7
MarsMD's standard contents for the MarsMD 7
- Lion 7 inch DD search coil
- Coil cover
- Connector protection cap to keep dirt and dust out when the coil is not in use
- Coil attachment bolt with mounting nut
- Two rubber rings
Cable end-boot color may vary.
Which detectors the Lion 7 fits
- Fisher F2
- Fisher F4
We carry separate versions of the Lion 7 for different detectors, each listed by the detector it fits. The version here is for the Fisher F2 and F4, so check the model on your control box before you order. Versions for other detectors are in our MarsMD Search Coils collection.
When to use the Lion 7
The Lion 7 is a Double-D coil with high discrimination, at home in thickets and tall grass where reliable identification of non-ferrous targets matters. MarsMD makes only Double-D coils, and every MarsMD coil is waterproof. MarsMD gives its weight as from 370 g (13.1 oz), since the weight can run higher depending on the detector version. The coil body is filled with high quality epoxy resin inside a high impact resistant, UV protected plastic shell. It has a robust mounting bracket and a screw-on connector, and the cable strain relief keeps the cable entry waterproof. The coil is protected against electrical interference.
For the F2 or F4, the Lion is the close-work coil for thickets, tall grass and iron-heavy ground. Short sweeps let you pull a good signal apart from the iron beside it. On open ground, switch to the 10 x 6 inch Sniper or the 13 inch Discovery, which we also carry for the F2 and F4 and which take in more ground per pass. Our metal detector coil guide explains how coil size and type trade coverage for separation.
Lion 7 specifications
| Specification | Lion 7 |
|---|---|
| Size | 7 in (18 cm) |
| Type | Double-D (DD) |
| Weight | from 370 g (13.1 oz) |
| Feature | High discrimination |
| Waterproof | Yes |
| Connector | Screw-on |
| Construction | Epoxy resin filled, impact resistant UV protected shell |
| Fits | Fisher F2, F4 |
| Warranty | 3 years from the date of purchase |
MarsMD gives its coils a 3-year warranty from the date of purchase. Every MarsMD coil we carry is in our MarsMD Search Coils collection.
Serious Detecting is a family-owned, authorized MarsMD dealer with a showroom in Ypsilanti, Michigan, and our staff help by phone or email.
Customer Questions & Expert Answers
Customer Reviews & Field Feedback
See what real detectorists and prospectors are saying. Read authentic experiences from the field, discover what users love most, and learn how this product performs in real-world conditions. Share your own review to help fellow explorers choose with confidence.
Recently Viewed Gear
Last products you explored