• This collar is suitable for use with both the Petsafe / Sportdog 400 and 800 Dog Training Collars.
• Waterproof receiver and water resistant transmitter
• Transmitter powered by standard 9 volt battery
• Receiver powered by a rechargeable, replaceable NiMH battery
• Provides consistent , reliable stimulation on land and in water
• Supplied in a superb hard plastic case.