SportDOG FieldSentinel 825: 1/2 Mile, BodyGuard Health Alerts

Why it matters

The FieldSentinel adds SportDOG's BodyGuard health alerts to a 1/2-mile trainer with 7 static levels. Remote and collar are submersible to 3 ft, less than SportDOG's 25 ft models.

Who it's for, and who should skip it

Good fit if

Field handlers
Hot-weather work
Health-minded owners

Look elsewhere if

Dogs under the maker's minimum weight
Fearful or reactive dogs without a trainer
Owners wanting a quick fix for aggression

Pros and cons

Pros

Health alerts
1/2 mile
Known brand

Cons

3 ft submersion
7 levels
Price

Limitations to weigh

Static stimulation is an aversive. Many vets and welfare groups advise reward-based training first and a qualified trainer before using any e-collar; start at the lowest level that gets a response and never use it in anger.
Check fit daily, move the receiver every few hours and limit wear time (makers commonly say no more than 8 to 12 hours a day) to avoid pressure sores.
Range figures are the maker's open-ground numbers; trees, hills and buildings cut real range.
Health alerts are a maker feature, not a substitute for watching your dog for heat stress or injury.

Specifications

Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.

Price seen	$179.99	Maker
Model number	FS-825	Maker
Range	1/2 mile	Maker
Levels	7 static levels	Maker
Water resistance (maker-stated)	Remote and collar submersible to 3 ft	Maker
Health alerts	BodyGuard health alerts (maker feature)	Maker