GPS Wireless Dog Fence with Customizable/Circular Boundary
- Training Collar
- Black
- 10.8 ounces
- 1 year
- Better rated than 94%
A wire free option worth considering for one medium or large dog, but not the right fit for small breeds given the manufacturer's own guidance, and a second collar is a separate purchase for multi-dog homes.
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How it ranks among the 100 training collars we track
5.0★ across 23 Amazon ratings, Bayesian-smoothed toward the category average.
23 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
100+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 100 training collars we track - how the scorecard works · full training collars data report. Confidence: limited - limited rating history.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
Gladsmile's ZF550 is a GPS based wireless containment system built around a rechargeable, IPX7 waterproof collar rather than buried wire, letting owners set a customizable circular boundary and choose from three correction modes when a dog approaches the edge.
The listing specifies this kit as sized for one dog, so a multi-dog household would need to buy an additional collar to cover a second animal. The product's own directions note it is not intended for small dogs, which narrows who this containment system actually fits despite being marketed broadly as a pet system.
- GPS based wireless containment, no buried wire
- Customizable circular boundary
- IPX7 waterproof, rechargeable collar
- Three correction modes, 1 year warranty
Who it's for
Owners of medium to large dogs who want a boundary system without trenching wire into the yard, and who are comfortable with GPS based rather than wire based containment accuracy.
Strengths and trade-offs
Drawn from this product's published specifications.
- No wire burying required, boundary is set electronically
- IPX7 waterproof rating suits outdoor and wet weather use
- Three correction modes allow some tuning to the dog's temperament
- One year warranty included
- Manufacturer directions state it is not for small dogs
- Kit covers one dog only, additional collars needed per extra dog
- GPS accuracy can be less consistent than a wired boundary
Performance notes
GPS based fences rely on satellite positioning to define the boundary rather than a buried wire loop, which makes setup faster but means accuracy can drift compared to wired systems, particularly in areas with poor GPS reception like dense tree cover. The IPX7 rating means the collar can handle rain and brief submersion, and the three correction modes give owners a way to adjust how the collar responds as the dog nears the edge.
Specifications
| Brand | GPS |
|---|---|
| Model | ZF550 |
| Dimensions & fit | |
| Item Weight | 10.8 ounces |
| Item Package Dimensions L X W X H | 8.3 × 6.4 × 1.9 inches |
| Construction & materials | |
| Color | Black |
| Included components | |
| Included Components | gps wireless dog fence sysytem |
| Warranty & support | |
| Warranty Description | 1 year |
| Other details | |
| Item Model Number | ZF550 |
| Manufacturer | GLADSMILE |
| Directions | Not for small dogs |
| Model Name | GPS wireless dog fence |
| Specific Uses For Product | Outdoor |
| Target Audience Keyword | Dogs |
| Customer Reviews | {'ratings_count': '23', 'stars': '5.0'} |
| Batteries | 1 Lithium Ion batteries required. (included) |
| Asin | B0GXTQD1PY |
| Date First Available | April 20, 2026 |
Other GPS training collars
How it compares
This product against the closest alternatives we track in training collars.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| GPS Wireless Dog Fence with Customizable/Circular BoundaryThis product | 5.0 / 5 | 23 | 2.7 / 5 |
| Educator ET-300 Mini E Collar for Dog Training with RemoteEducator | 4.5 / 5 | 8,500 | 4.5 / 5 |
| E-Collar ET-300 Mini Educator Remote Dog Training CollarE-Collar | 4.6 / 5 | 6,600 | 4.4 / 5 |
| AI Dog Shock Collar 2 DogsAI | 4.4 / 5 | 2,300 | 4.3 / 5 |
| Garmin Sport PRO BundleGarmin | 4.6 / 5 | 1,500 | 4.3 / 5 |
Similar training collars from other brands
Questions about the GPS ZF550
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Is the Gladsmile ZF550 suitable for small dogs?
No, the manufacturer's own directions state it is not intended for small dogs.
Does the ZF550 kit cover more than one dog?
The listing specifies this kit as sized for one dog, so an additional collar would be needed for a second dog.
Is the ZF550 collar waterproof?
Yes, it carries an IPX7 rating and is rechargeable.