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FieldTrainer® 425S

SKU# SD-425S

Availability: In stock

FieldTrainer® 425S

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The FieldTrainer® 425S takes the most advanced, industry-leading technology that SportDOG® has ever built into its e-collars and packaged it up in the most compact system ever offered. Specifically for stubborn dogs, the SD-425S has a higher range of stimulation than the SD-425. Ideal for training in the yard or field, or for hunting with close-working dogs, the SD-425S allows you to switch instantly between 7 levels of medium/high stimulation, as well as train with vibration and tone options.

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Range Up to 500 yards
Stimulation Ranges 7 instantly selectable static stimulation levels with medium/high stim ranges
Option to train with vibration and tone
Expandable System Expandable to 3 dogs
Waterproof DryTek® waterproof and submersible to 25 feet
Dog Size For dogs 8 pounds or larger with neck sizes 5" - 22"
Batteries Rechargeable lithium-ion batteries
Charge in 2 hours, last 50-70 hours per charge
Low Battery Indicator Yes
  • Remote Transmitter
  • Receiver on 3/4" Collar Strap
  • Charging Adaptor
  • Standard Contact Points
  • Long Contact Points
  • Lanyard
  • Test Light Tool
  • Operating Guide
  • Basic Training Manual & DVD
Product Dimensions Receiver without strap - 2.60"L X 1.30"W 1.23"D
Remote Transmitter with antenna - 5.30"L X 1.70"W X 1.00" D


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Customer Reviews

Review by Kasey

(Posted on 7/13/17)


Best Collar Ever!!
I have a 4 year old Springer Spaniel Setter Mix. I bought this collar when she was about a year old and have put it through the ringer over the years. 3 years in Colorado climbing and hiking mountains (a few times the controller has taken a tumble) and the collar still works like the day I bought it. Very durable, easy to use. Its a bit pricy but its worth every penny!! I will definitely be purchasing a second collar when I get another dog. I won't use it for hunting so I can't speak to that but for training purposes and hiking, it fits the bill perfectly. Can't say enough good things!!

Review by Ridgely B

(Posted on 2/13/17)


Great Product, Not so Great Life Span
I absolutely love this collar. I have a 97 lb Rhodesian Ridgeback and this collar has worked wonders in terms of his attention span.

I barely ever have to use any of the shock buttons 1-7, and can almost always maintain my dogs attention with the vibrate setting.

Changing the setting on the collar/remote is very easy, and SportDog offers a ton of training options for setting up your remote.

The only complaint I have is the life span of the collar/remote. I had to replace the remote after I had had it for close to a year (free remote replacement bc still under warranty). But now I'm going to have to replace the entire collar/remote set because it completely does not work any more. It has not been in water, or even left outside in cold temperatures. I'm very careful to not over charge the batteries, so I have no idea what happened to it.

I have called SportDog, and by the way their Customer Service is pretty great, but My collar is out of warranty so I will have to either repurchase, or try something else. But I did enjoy this product while it was working!


Thanks for taking the time to leave your review, Ridgely. We're sorry to hear that you've had issues with your FieldTrainer. Please know that you shouldn't have to replace both components and we can usually find a better replacement option than full retail for existing customers (with a few product details and troubleshooting). We would like to get a little more information from you to confirm that you were given the best solution for your situation. Please reach out to us at so we can better assist you.

Review by Kyle Fort

(Posted on 7/6/16)


Perfect for training my hounds!
I have a couple of hound wannabes and when we go out to work the fields they often forget to listen to dumb ole dad. It only took a few blasts with the shock function to get them to stop and pay attention. I now use the vibrate setting and they pay wonderful attention.

I run two of the '425S' units in tandem. Doing this allows me to have two remotes that can control either collar. That way when my lady friend and I are out running the dogs we can have independent control of either dog.

Also, buy the LED Light kicks butt for camping!

Thank you so much!


PS- Wonderful customer service and support!!!

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