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Description
Groundtech GR-4 3D Ground ScannerDiscover a new dimension of treasure hunting with the Groundtech GR 4 3D Ground Scanner, a next generation deep exploration system designed for professional treasure hunters, archaeologists, and serious detectorists. Merging advanced dual sensor technology with real time 3D visualization, the GR 4 lets you detect underground anomalies, locate buried structures, and differentiate metals with incredible accuracy. Whether you are hunting for deep buried
Discover a new dimension of treasure hunting with the Groundtech GR-4 3D Ground Scanner, a next-generation deep exploration system designed for professional treasure hunters, archaeologists, and serious detectorists. Merging advanced dual-sensor technology with real-time 3D visualization, the GR-4 lets you detect underground anomalies, locate buried structures, and differentiate metals with incredible accuracy.
Whether you are hunting for deep-buried hoards, ancient relics, or mapping hidden voids like tunnels, chambers, and graves, the GR-4 delivers unmatched performance in a compact, field-ready design.
Key Features
- Advanced MFS-2 Dual Sensor Technology: Equipped with high-sensitivity gradiometer sensors (± 2000 µT) that minimize errors and deliver deeper, highly precise scanning results.
- Extreme Depth Capability: Reach depths of up to 15 meters (depending on soil composition and target size) to find targets far beyond the reach of standard metal detectors.
- Standalone Operation: No phone or tablet required in the field! View scanning modes, configurations, and instant graphic results directly on the device's built-in high-resolution color display.
- Comprehensive 3D & 4D Analysis: Sync your data via Bluetooth 4.2 BLE to the G-Portal mobile app (available for Android and iOS) to analyze targets graphically, separate ferrous from non-ferrous metals, and generate detailed reports.
- Versatile Scanning Modes: Seamlessly switch between 3D Ground Scanning, Live Scanning (for quick, unbound exploration), and a high-depth Pinpointer Function to lock onto target locations.
- Field-Adaptive Design: Features a foldable modular body structure, adjustable grip angle, and a removable sensor module for optimal portability and comfort.
Technical Specifications
- System Type: 3D Ground Scanner (Gradiometer)
- Sensor Technology: MFS-2 Dual Sensor Technology (± 2000 µT)
- Maximum Depth: Up to 15 meters (variable based on soil structure and object size)
- CPU / Processor: 240 MHz CPU with a 12-bit A/D converter
- Scanning Modes: 3D Ground Scanning, Live Scanning, Pinpointer Function
- 3D Analysis Software: G-Portal Application (Android & iOS compatible)
- Wireless Connectivity: Bluetooth 4.2 BLE
- Battery: 3.7 V Li-ion rechargeable battery
- Operating Time: Approximately 10 hours of continuous use
- Charging Interface: Type-C input (supports 25W fast charging adapters)
- Operating Temperature: 32°F to 158°F (0°C to 70°C)
- Multi-Language Support: 11 languages on-device / 25 languages via the mobile app
- Warranty: 2-Year Manufacturer Warranty
What’s Included in the Box?
- Groundtech GR-4 Main Unit (with integrated color display)
- MFS-2 Dual Sensor Module
- Heavy-Duty Carrying Bag
- Type-C Charging Adapter
- User Manual & Warranty Documentation
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 4
Definitely worth the read!
Format: Kindle
After taking a deep breath and taking in that wicked twist of an ending, I have finally composed myself. My first thought when I started this book was that I love Reyna's character. I was intrigued by her connection with her familiar and the Ruin that is plaguing her land. It came as no surprise that she took her sister's place in an attempt to protect her. When they reach the Air Court everything slows down. This is where it was iffy for me. First of all, I like multiple POV's in books however 7 is a bit much. It starts to interrupt the story line. I felt like I was finally making progress connecting with one character, then it was switched to another person. I felt they all had necessary or pertinent information but not necessarily were they all POV worthy. The only other thing that annoyed me was that Reyna constantly was " trapped." She would rush off without thinking, only to need rescuing. She is brilliant in a fight, but she really doesn't think through anything. Lorcan is amazing. I know he might be on the "bad" list, but his background is so interesting. Eislyn(Reyna's sister) is really so sweet, but calculating. I enjoyed her and Thane's dialogue. The author did an amazing job with the imagery in this book. Everything was so detailed it was easy to fall into the scene. I love unexpected twists and while part of the ending I expected, I wasn't expecting how it took place. All in all, I found it very entertaining and I am very invested in continuing this series.
Favorite quotes:
"The truth may be twisted but never false."
"Who was she if she was not the enemy of the Air Court? What was her purpose of she no longer has that?"
"In a war-torn land, love was always a lie."
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Reviewed in the United States on March 4, 2020
★★★★★ 5
Great Read!!! Great story!!!
Format: Kindle
The series is long, but Ms. Wolfhart does a fantastic job of weaving this tale while bringing so much to the characters. Surprises and plot twists along the way to keep you intrigued. There is some graphic sex, but is no way the focal point. Grammar was excellent (a rare find with a lot of self publishers) with only a few noted errors. I rarely give 4 stars, let alone 5.
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Reviewed in the United States on April 30, 2021
★★★★★ 3
Sadly, DNF
Format: Kindle
I read this thru KU. I LOVED the synopsis. And then I began reading... and it was a DNF at 68% after picking it up and putting it down several times because I really loved the main female character.
*****SPOILERS*****
Pros:
The world is unique, intriguing and fun. The primary female character is bad-a** but not a b*tech or a mary sue. The primary female has depth. I really want to know what happens to her even tho it's been weeks and I don't remember her name. The villains to the point I read are pretty good -- an ever present threat of mysterious and possibly many culprits.
Cons:
Way, way too many points of view. I stopped counting at 7. It's the prime reason why I don't care about most of the characters or remember their names even when I like them. There's just too many points of view so almost none of the characters have enough book space for the author to properly develop them. This literally killed the book for me. Actually it killed my desire to read. For weeks.
The main male is more villain than hero. He agreed to marry the main female then locks her up & eschews her for her sister, all while bad mouthing her as unfit to rule when he never spent any time with her getting to know her. He is actually unfit to rule as he is blind to the woes of his own kingdom and starts off a peace mission to secure a ceasefire through marriage by murdering an inn full of people in her country for no real reason. Plus, he constantly makes promises he does not keep. And it's gross of him to pine for the sister behind the main female's back.
*****
As much as I really wanted to see what happened to the main female character, it wasn't enough for me to keep trying to slog thru this book. There was a lot of potential here that just fell short.
Hence, 3 stars.
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Reviewed in the United States on June 19, 2021
★★★★★ 5
Fae Courts with High Intrigue
Format: Kindle
This book is one that just builds and builds and then surprises you to no end. You may think you know the villains and then you are jolted in another direction. Princess Reyna is a real gem, strong of character, a fierce fighter, and loyal to her family and kingdom. Just when you think she and Lorcan, well you know, the plot is flipped. Can't wait to see where this goes in book two.
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Reviewed in the United States on July 7, 2023
★★★★★ 4
Slow, sorry but good
Format: Kindle
This was a slow moving book. Lots of character pov chapters, lots of superfluous descriptions and endless courtly appearances stalled this book to start. Once you get into the heart of the story, it takes off. Before you know it the book is done. My favorite character is Reyna. She is so strong. She is true to herself. She gets into a lot of trouble with her headstrong ways but it's entertaining. I have high hopes for Lorcan. He is honorable to a fault. Thane had turned out to be better than I thought but i still don't like him. Eislin is useless. Great plot twists at the end. I'm looking forward too book 2.
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Reviewed in the United States on June 6, 2020