SportDOG Brand FieldTrainer 425S Stubborn Dog Remote Trainer - 500 Yard Range - Waterproof, Rechargeable Training Collar with Tone, Vibration, and Shock SportDog SD-425S Stubborn Dog Trainer can alert with a stimulation, tone or vibration making it ideal for training in the yard, field, or for hunting with close-working dogs. Designed specifically for tougher, more stubborn dogs. 7 instantly selectable static stimulation levels with medium/high stim ranges. Option to train with vibration and tone. DryTek Waterproof design technology. Both the Transmitter and Receiver are waterproof and submersible. 500 yard range.