You’re in confident control with up to 16 stimulus levels and a choice of momentary or continuous correction. Vibration and tone options further help you build a customized training system to guarantee the best performance from your dog. With 1 mile of range, a slimprofile collar receiver that ensures a perfect fit and a compact transmitter that’s easy to handle, once again SportDOG Brand delivers on our promise: Gear the way you’d design it. For use in the US only. This unit is compatible with all US 110v outlets and are not to be used with 220v international voltage.