SPORTDOG SportTrainer 875 1/2 Mile Black Remote Trainer (SD-875)

Designed for long distance control at 1/2 mile range (880 yards); Built with lithium-ion batteries, this system features a 2 hour quick charge and low battery indicators; Tone, vibration, and 10 static stimulation levels allow you to customize training; Easy-to-read OLED screen; Waterproof and submersible to 25 feet; Expandable to 3 dogs; Compatible for dogs 8 pounds or larger with neck sizes 5-22 inches; Receiver without strap: 2.60"L x 1.30"W x 1.23"D; Remote Transmitter with antenna: 7.30"L x 2.10"W x 1.40"D