SportDOG FieldTrainer 425 vs 425S vs 425X vs 425XS: Comparison


We’ve previously reviewed the 425X & 425XS remote trainer models.

In this guide, we outline the main differences between the previous/original 425 and 425S models, and the newer 425X and 425XS models of the FieldTrainer E Collars by SportDOG.

We also provide a summary of the main features of the new models, their differences and similarities, and who they each might be suited for.

Let’s take a look!


(*Note – this is a general information guide only. It is not a substitute for the advice of a professional or suitably qualified expert.)

(*Friendly Disclosure – links to retailers or brands on this page may include affiliate links, and we may receive a commission when you purchase through these links)


SportDOG FieldTrainer 425 vs 425S vs 425X vs 425XS

If you want to go straight to viewing the newer X and XS models, you can do so here:





If you’d like to take a look at SportDOG’s other remote dog training collars, you can check out this guide – SportDOG Remote Trainer & E Collar Reviews Guide.


What’s New With The 425X and 425XS Models? (Compared To The 425 & 425S Models)

The 425X and 435XS are the new models, with the 425 and 425S being the previous models.

In summary, the main differences between the old and new models are:


FieldTrainer 425 and 425X

Compared to the original 425 model which had 7 static stimulation levels, the 425X model has got 21 levels of static stimulation.


FieldTrainer 425S and 425XS 

The 425XS now has 21 levels of static stimulation instead of the 7 static levels the 425S had.


… So, with the additional levels of static stimulation, it makes sense that the new models might be the better buy.

We checked out the US version of SportDOG’s site in 2020, and they only have the new models displayed at the moment.

Having said that, it’s possible the previous 425 and 425S models are available still on online third party sellers.


What’s The Main Differences Between The 425X and 425XS Models?

There is a main difference, and that is that:

– The 425XS is designed for high-drive, more stubborn dogs

– The 425XS has medium/high stim ranges, whereas the 425X has low/medium stim ranges


What’s The Main Similarities Between The 425X and 425XS Models?

Both models share these features:

– 500 yards range

– 21 levels of static stimulation

– In addition to stim, tone and vibration training modes are available

– Supports up to 3 additional dogs when additional collar receivers are used

– Has the DryTek® technology, which makes the receiver waterproof and submersible to 25 feet

– Has rechargeable batteries, that have 2 hour quick charge, and lasts 50-70 hours per charge

– Both are designed for dogs 8 pounds or larger with neck sizes 5″ – 22″

– Both are designed for field training or hunting with close working dogs

– Both have small and light collar devices – this is what the FieldTrainer models are designed to be

– Both have a low battery indicator


SportDOG FieldTrainer 425 vs 425S vs 425X vs 425XS – Reviews

If you’d like to see the full features of the newer X and XS models, you can read the full reviews here:

SportDOG FieldTrainer 425X Review

SportDOG FieldTrainer 425XS Review


Other E Collars & Remote Dog Training Dog Collars

You can read about some of the best overall e collars and remote dog training collars from different brands in this guide.


E Collar & Remote Dog Training Collar Buyers & FAQ Guide

If you’d like more information on e collars in general, you can read this guide which is an e collar and remote dog training collar buyers guide and FAQ guide.

In it, information is provided on the following:

What some of the best e collars might be

Factors to consider in deciding which e collar to buy

What the cost of an e collar is 

What size e collar to get

What is an e collar

Types of e collars

What is an e collar used for, and why use one

How to use an e collar

How to put an e collar on your dog

How to train a dog with an e collar

At what age to start using an e collar, and how long training takes

When you might consider using an e collar

Safety considerations for using an e collar

E collars vs bark collars


What Size E Collar/Remote Dog Training Collar Do I Get?

In terms of size of the e collar, you might look for two main things:

– The weight range of the collar i.e. it might say ‘for dogs 8lbs and over’

– The neck size that the collar fits i.e. it might say for dogs with neck sizes 6 to 28 inches



– Find out the weight of your dog

– Measure their neck size and compare it to the collar strap length that the collar comes with

– And, make sure you follow the manufacturer’s sizing specifications for the e collar you want


Safety Considerations With A Remote Dog Training Collar

Safety is extremely important with a remote dog training collar.

Always always get your vet’s advice or the advice of an animal health and/or training expert – nothing is a substitute for professional advice.

Some general safety guidelines for using an e collar humanely might be:

Buy from a reputable company who put proper use of the e collar and the safety of the dog as a priority 

Read and follow the operating guide, instruction/safety manual and training guide that comes with the e collar system from the manufacturer for operation and safety instructions and guidelines

Pay attention to any warnings issued by the manufacturer

Monitor your dog’s response both mentally and physically to using an e collar. Take the collar off immediately and discontinue use of the system if you notice any negative implications or reactions


A good remote dog training collar that uses static stimulation should simply stimulate the muscle (to the point of reflex) to get the dog’s attention, but should not cause pain (it might be slightly annoying for the dog to act as a small deterrent – but shouldn’t cause pain or harm). It certainly shouldn’t cause a ‘sharp pain’ to the muscle or body. 

To get a safe stimulation level – you can always start from the lowest stimulation level, and work your way up to a level that gets the dog’s attention (such as changing body language when a stimulation, vibration or tone is administered) without any visible sign of pain or harm (such as yelping, or showing signs of stress).

A good e collar company should give you all the necessary safety, use and training instructions, and should have a dedicated customer service line to help when you being using the collar system.

The static stimulation function does not need to be used either – tone and vibrate training modes can be used instead.

Some owners like to even use their e collar as a temporary training tool, and may go back to using body or verbal commands once behaviors are reinforced (if suitable).




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