Sportdog YardTrainer 100, Designed For Basic Obedience Training Around The House, Yard, Or Park, Any Situation Where Your Dog Is Within 100 Yards, Compact & Discrete System, Built With Drytek Technology, Waterproof & Submersible To 25', Rechargeable, 3 Stimulation Types: Tone, Vibration, 8 Levels Of Static Stimulation, Each Stimulation Type Has A Dedicated Button, Allowing You To Easily Deliver The Stimulation That Best Fits The Situation, Intuitive Design Makes Operating The Remote A Breeze.