{"title":"Groundtech GR-3 Series 3D Ground Scanners","description":"\u003cp\u003eThe Groundtech GR-3 Series is the stick-style, phone-based line of \u003ca href=\"\/collections\/groundtech\"\u003eGroundtech\u003c\/a\u003e 3D ground scanners: the GR-3 and the deeper GR-3 PLUS. It is shopped by cache, relic and treasure hunters who want to survey a defined area for deep buried metal and voids without paying for a scanner with its own screen. Both are one-piece 810 mm wands of about 600 g with no cables, sending scan data over Bluetooth to the Groundtech GR-3 app on an Android or iOS phone or tablet.\u003c\/p\u003e\n\u003cp\u003eThree things decide the choice. Depth: Groundtech rates the GR-3 at up to 7 meters and the GR-3 PLUS at up to 15 meters, depending on target size and soil. The phone: neither model has a screen, so your phone or tablet is the display. Recovery: a ground scanner is not a conventional metal detector, so plan on a pinpointer or detector to find the target in the hole. The GR-3 Series manual and brochure are in this collection as digital downloads.\u003c\/p\u003e\n\u003cnav aria-label=\"Groundtech GR-3 Series quick links\"\u003e\n\u003cp\u003e\u003cstrong\u003eQuick Links:\u003c\/strong\u003e \u003ca href=\"\/collections\/groundtech-gr-4\"\u003eGR-4 Series\u003c\/a\u003e | \u003ca href=\"\/collections\/groundtech-a2\"\u003eA2 Series\u003c\/a\u003e | \u003ca href=\"\/collections\/groundtech-pinpointers\"\u003eGroundtech Pinpointers\u003c\/a\u003e | \u003ca href=\"\/collections\/groundtech\"\u003eAll Groundtech\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/nav\u003e","products":[{"product_id":"groundtech-gr-3-3d-ground-scanner","title":"Groundtech GR-3 3D Ground Scanner","description":"\u003cp\u003eThe Groundtech GR-3 is an ultra-compact, completely wireless 3D ground scanner for treasure hunters, relic seekers, and archaeologists who want deep-seeking technology in a highly portable format. Weighing just 600 grams (1.3 lbs) with no heavy batteries or tangled cables, the GR-3 uses CN-D dual gradiometer sensors to reach scanning depths of up to 7 meters (approx. 23 feet). It includes the Groundtech App for installation on your Android or iOS smartphone, delivering real-time, color-coded 3D scan graphics directly to the palm of your hand.\u003c\/p\u003e\n\u003ch3\u003eEntry-Level 3D Ground Scanner with App\u003c\/h3\u003e\n\u003cp\u003eThe GR-3 measures natural electromagnetic variances in the soil with dual gradiometer sensors, allowing treasure hunters to detect buried metals and underground anomalies and visualize the scan data immediately on their smartphone via the Groundtech App over Bluetooth. Intuitive color graphics differentiate magnetic metals like iron and steel from non-magnetic treasures like gold, silver, and copper – and reveal empty spaces that mark tunnels, graves, and chambers.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0760\/1464\/9628\/files\/GR-3_APP_Inline.jpg?v=1783010869\" alt=\"GR-3 Scanner App\"\u003e\u003c\/p\u003e\n\u003ch3\u003eDeep Detection in an Ultra-Light Wand\u003c\/h3\u003e\n\u003cp\u003eThe stick-style GR-3 is designed to be extremely simple and compact, making it accessible to everyone – there is nothing to assemble and no external battery pack to carry. Depending on the size of the target and the soil structure, the scanner reaches depths of up to 7 meters, locating targets far beyond the reach of conventional coil detectors.\u003c\/p\u003e\n\u003ch3\u003eFour Scanning Modes for Any Search Scenario\u003c\/h3\u003e\n\u003cp\u003eAdapt instantly to any terrain with Automatic Ground Scanning for systematic grid surveys, Manual Ground Scanning for full control over each measurement, Live Scan for quick, unbound target tracking, and a precise Pinpointer function to lock onto exact target locations before you dig.\u003c\/p\u003e\n\u003ch3\u003eAnalyze Scan Data in Real Time on Your Smartphone\u003c\/h3\u003e\n\u003cp\u003eScan data transmits instantly via Bluetooth 4.2 BLE to the Groundtech GR-3 App for Android and iOS, available in 23 languages. Analyze target depth, size, and structural shape in detailed 3D graphics, save your scans to your phone or tablet, and re-evaluate promising anomalies whenever needed – no notebook or extra software required.\u003c\/p\u003e\n\u003ch3\u003eBuilt for the Field\u003c\/h3\u003e\n\u003cp\u003eEngineered to deliver stable, high-resolution subsurface data across challenging ground conditions – sandy beaches, rocky hillsides, and dense clay soils. The internal Li-ion battery runs approximately 8 hours per charge and recharges over USB-C with support for 25 W fast charging adapters, including portable power banks.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0760\/1464\/9628\/files\/GR-3_Inline.jpg?v=1783010960\" alt=\"man holding GR-3 Scanner\"\u003e\u003c\/p\u003e\n\u003ch3\u003eFactory Included Items:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGroundtech GR-3 Main Unit\u003c\/li\u003e\n\u003cli\u003e5-Volt Charging Adapter \u0026amp; Type-C Charging Cable\u003c\/li\u003e\n\u003cli\u003eCarrying Case\u003c\/li\u003e\n\u003cli\u003eUser Manual \u0026amp; Official Warranty Documentation (2-Year Manufacturer Warranty)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications:\u003c\/h3\u003e\n\u003ch4\u003eMain Unit\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eSystem type: 3D Subsurface Visualization \/ Ground Scanner (Gradiometer)\u003c\/li\u003e\n\u003cli\u003eSensor technology: CN-D Dual Sensor Technology, ±2000 µT\u003c\/li\u003e\n\u003cli\u003eMaximum scan depth: up to 7 m (approx. 23 ft), depending on soil structure and object size\u003c\/li\u003e\n\u003cli\u003eScanning modes: Auto Ground Scan, Manual Ground Scan, Live Scan, Pinpointer\u003c\/li\u003e\n\u003cli\u003eProcessor: 240 MHz CPU with 12-bit A\/D converter\u003c\/li\u003e\n\u003cli\u003eDimensions (L x W x D):  31.9 x 2.8 x 2.8 in (\u003cmeta charset=\"utf-8\"\u003e810 x 70 x 70 mm)\u003c\/li\u003e\n\u003cli\u003eWeight: approx. 1.3 lbs (600 g)\u003c\/li\u003e\n\u003cli\u003eBattery: 3.7 V Li-ion rechargeable (internal)\u003c\/li\u003e\n\u003cli\u003eOperating time: approx. 8 h\u003c\/li\u003e\n\u003cli\u003eCharging input: 5 V – 2 A, Type-C (supports 25 W fast charging)\u003c\/li\u003e\n\u003cli\u003eOperating temperature: 32°F – 158°F (\u003cmeta charset=\"utf-8\"\u003e0°C – 70°C)\u003c\/li\u003e\n\u003cli\u003eStorage temperature: –20°C – 60°C (–20°C – 60°C)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eData Transmission\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eTechnology: Bluetooth 4.2 BLE\u003c\/li\u003e\n\u003cli\u003eConnection: real-time transfer to smartphone or tablet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eSmartphone Requirements for \u003cem\u003eGroundtech GR-3 App\u003c\/em\u003e\n\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eCompatibility: Android \u0026amp; iOS\u003c\/li\u003e\n\u003cli\u003eWireless connection: Bluetooth 4.2 BLE\u003c\/li\u003e\n\u003cli\u003eLanguages: 23 supported\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWondering if 7 meters is enough depth for your sites? Our \u003ca href=\"https:\/\/seriousdetecting.com\/blogs\/detecting-prospecting\/groundtech-3d-ground-scanners-and-metal-detectors-the-complete-buyers-guide\"\u003eGroundtech buyer's guide\u003c\/a\u003e compares the GR-3 against every model in the range so you can buy with confidence.\u003c\/p\u003e","brand":"Groundtech","offers":[{"title":"Default Title","offer_id":54228038648092,"sku":"GR-3","price":1300.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0760\/1464\/9628\/files\/GR-3_01_eded7492-0bf6-4867-a736-0dd19994bfcf.jpg?v=1782314277"},{"product_id":"groundtech-gr-3-plus-3d-ground-scanner","title":"Groundtech GR-3 PLUS 3D Ground Scanner","description":"\u003cp\u003eThe Groundtech GR-3 PLUS is an ultra-lightweight, completely wireless 3D ground scanner for treasure hunters, relic seekers, and archaeologists who search for deeply buried caches, artifacts, and cavity structures such as tombs, tunnels, and chambers. This advanced edition keeps the compact 600-gram wand design of the GR-3 series and upgrades the internal CN-D dual sensor system to reach scanning depths of up to approx. 49 feet – double the base model. The GR-3 PLUS includes the Groundtech App for installation on your Android or iOS smartphone, delivering real-time, color-coded 3D scan graphics directly to the palm of your hand.\u003c\/p\u003e\n\u003ch3\u003eDeep-Seeking 3D Ground Scanner with App\u003c\/h3\u003e\n\u003cp\u003eThe GR-3 PLUS measures natural electromagnetic variances in the soil with dual gradiometer sensors, allowing treasure hunters to detect buried metals and underground anomalies and visualize the scan data immediately on their smartphone via the Groundtech App over Bluetooth. Intuitive color graphics differentiate magnetic metals like iron and steel from non-magnetic treasures like gold, silver, and copper – and reveal empty spaces that mark tunnels, graves, caves, and chambers.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0760\/1464\/9628\/files\/GR-3__Inline.jpg?v=1783005937\" alt=\"3D Scanner Application\"\u003e\u003c\/p\u003e\n\u003ch3\u003eDouble the Depth, Same Ultra-Light Wand\u003c\/h3\u003e\n\u003cp\u003eWeighing just 1.3 lbs with no external battery packs or tangled cables, the GR-3 PLUS packs professional-grade geophysical exploration power into a stick-style scanner you can carry all day. The upgraded high-precision sensor system reaches up to 15 meters deep depending on soil structure and target size, locating targets far beyond the reach of conventional coil detectors.\u003c\/p\u003e\n\u003ch3\u003eFour Scanning Modes for Any Search Scenario\u003c\/h3\u003e\n\u003cp\u003eAdapt instantly to any terrain with Automatic Ground Scanning for systematic grid surveys, Manual Ground Scanning for full control over each measurement, Live Scan for quick, unbound target tracking, and a precise Pinpointer function to lock onto exact target locations before you dig.\u003c\/p\u003e\n\u003ch3\u003eAnalyze Scan Data in Real Time on Your Smartphone\u003c\/h3\u003e\n\u003cp\u003eScan data transmits instantly via Bluetooth 4.2 BLE to the Groundtech GR-3 App for Android and iOS, available in 23 languages. Analyze target depth, size, and structural shape in detailed 3D graphics, save your scans, and revisit promising anomalies – no notebook or extra software required.\u003c\/p\u003e\n\u003ch3\u003eBuilt for the Field\u003c\/h3\u003e\n\u003cp\u003eEngineered to deliver stable, high-resolution subsurface maps across challenging ground conditions – sandy beaches, heavily mineralized rocky hillsides, and dense clay soils. The internal Li-ion battery runs approximately 8 hours per charge and recharges over USB-C with support for 25 W fast charging adapters.\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0760\/1464\/9628\/files\/GR-3__Lifestyle_inline.jpg?v=1783006867\" alt=\"man with GR-3 Plus Scanner and tablet\"\u003e\u003c\/p\u003e\n\u003ch3\u003eFactory Included Items:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGroundtech GR-3 PLUS Main Unit\u003c\/li\u003e\n\u003cli\u003e5-Volt Charging Adapter \u0026amp; Type-C Charging Cable\u003c\/li\u003e\n\u003cli\u003eCarrying Case\u003c\/li\u003e\n\u003cli\u003eUser Manual \u0026amp; Official Warranty Documentation (2-Year Manufacturer Warranty)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications:\u003c\/h3\u003e\n\u003ch4\u003eMain Unit\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eSystem type: 3D Subsurface Visualization \/ Ground Scanner (Gradiometer)\u003c\/li\u003e\n\u003cli\u003eSensor technology: High-Precision CN-D Dual Sensor Technology, ±2000 µT\u003c\/li\u003e\n\u003cli\u003eMaximum scan depth: up to 49ft (\u003cmeta charset=\"utf-8\"\u003e15 m), depending on soil structure and object size\u003c\/li\u003e\n\u003cli\u003eScanning modes: Auto Ground Scan, Manual Ground Scan, Live Scan, Pinpointer\u003c\/li\u003e\n\u003cli\u003eProcessor: 240 MHz CPU with 12-bit A\/D converter\u003c\/li\u003e\n\u003cli\u003eDimensions (L x W x D): 31.9 x 2.8 x 2.8 in (810 x 70 x 70 mm)\u003c\/li\u003e\n\u003cli\u003eWeight: approx. 600 g (1.3 lbs)\u003c\/li\u003e\n\u003cli\u003eBattery: 3.7 V Li-ion rechargeable (internal)\u003c\/li\u003e\n\u003cli\u003eOperating time: approx. 8 h\u003c\/li\u003e\n\u003cli\u003eCharging input: 5 V – 2 A, Type-C (supports 25 W fast charging)\u003c\/li\u003e\n\u003cli\u003eOperating temperature:  32°F – 158°F  (0°C – 70°C)\u003c\/li\u003e\n\u003cli\u003eStorage temperature: –4°F – 140°F (\u003cmeta charset=\"utf-8\"\u003e–20°C – 60°C)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eData Transmission\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eTechnology: Bluetooth 4.2 BLE\u003c\/li\u003e\n\u003cli\u003eConnection: real-time transfer to smartphone or tablet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eSmartphone Requirements for \u003cem\u003eGroundtech GR-3 App\u003c\/em\u003e\n\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eCompatibility: Android \u0026amp; iOS\u003c\/li\u003e\n\u003cli\u003eWireless connection: Bluetooth 4.2 BLE\u003c\/li\u003e\n\u003cli\u003eLanguages: 23 supported\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTorn between the GR-3 PLUS and a model with a built-in screen? Our \u003ca href=\"https:\/\/seriousdetecting.com\/blogs\/detecting-prospecting\/groundtech-3d-ground-scanners-and-metal-detectors-the-complete-buyers-guide\"\u003eGroundtech buyer's guide\u003c\/a\u003e breaks down depth, features, and price across the full lineup.\u003c\/p\u003e","brand":"Groundtech","offers":[{"title":"Default Title","offer_id":54228048412956,"sku":"GR-3+","price":1600.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0760\/1464\/9628\/files\/GR-3_01_f0df9e77-e762-4c73-83ad-acb7670b9195.jpg?v=1782312311"},{"product_id":"groundtech-gr-3-series-digital-manual","title":"Groundtech GR-3 Series Digital Manual","description":"\u003cp\u003eGroundtech GR-3 Series Digital Manual\u003c\/p\u003e\n\u003cp\u003eAs soon as your order is completed with your digital \u003cmeta charset=\"utf-8\"\u003eGR-3 Series Instruction Manual, you'll be able to download the digital file(s) from the confirmation page, confirmation email, or from your account.\u003c\/p\u003e","brand":"Groundtech","offers":[{"title":"Default Title","offer_id":54286040924444,"sku":"GR-3_Manual","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0760\/1464\/9628\/files\/GR-3_Series_Cover_c4d3d81b-1c41-4210-bfac-8a228aa7561e.jpg?v=1783518166"},{"product_id":"groundtech-gr-3-series-digital-brochure","title":"Groundtech GR-3 Series Digital Brochure","description":"\u003cp\u003eGroundtech GR-3 Series Digital Brochure\u003c\/p\u003e\n\u003cp\u003eAs soon as your order is completed with your digital \u003cmeta charset=\"utf-8\"\u003eGR-3 Series \u003cmeta charset=\"utf-8\"\u003eBrochure, you'll be able to download the digital file(s) from the confirmation page, confirmation email, or from your account.\u003c\/p\u003e","brand":"Groundtech","offers":[{"title":"Default Title","offer_id":54640949821724,"sku":"GR-3_Series_Brochure","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0760\/1464\/9628\/files\/GR-3_Series_Brochure.jpg?v=1790960072"}],"url":"https:\/\/seriousdetecting.com\/collections\/groundtech-gr-3.oembed","provider":"Serious Detecting","version":"1.0","type":"link"}