BR 100 Pro

The BR 100 Pro is BR Systems' long-range locator, built around a Microchip PIC32 controller and a 4.3-inch colour display of 480 × 272 pixels, 16.7 million colours and 400 cd brightness, so the screen stays readable in daylight and at night. Instead of a search coil it works through compact high-gain detection sensors and antennas, and the interface runs in six languages — English, French, German, Spanish, Turkish and Arabic. BR Systems lists four supporting technologies: AGC automatic ground calibration, which the maker says identifies the nature of the search area and calibrates the device to the soil in a few seconds; B.U.M. automatic detection; G.L.Y. laser guidance; and the BRF signal filter, described as clearing interference at the search site. The three search systems are chosen from the menu. The Long-Range Detection System covers gold, raw gold, silver, bronze, copper, aluminium, iron, lead, tin, mercury, diamonds, emeralds, water, voids and caves, plus a custom setting; BR Systems specifies a range of up to 1,000 m and a search depth of up to 30 m for it. The ION Search System targets what the manufacturer calls the ionic domains of gold, silver, bronze, platinum and copper, specified at up to 1,000 m and 20 m deep, while the Magneto Scan System looks for precious and non-precious metals, voids and caves to a stated 16 m. The unit stores six scans, gives audio target alerts, and has adjustable vibration, screen brightness and sound level that it keeps between sessions. It ships complete in a hard case of 530 × 400 × 228 mm weighing 5,030 g all-in, runs 20 continuous hours on its 7,800 mAh 3.7 V Li-ion pack and recharges in 3.5 hours from an 18 W Type-C charger — a package aimed at professional treasure and gold search teams who cover large ground and want a portable unit rather than a swung detector.