SportDOG Brand YardTrainer Remote Trainers - Basic Obedience Dog Training Collars for Around The House or Yard E-collar that features 100 yard range and a higher range of static stimulation for your more stubborn dog; Collar Receiver fits dogs 8 pounds or larger with neck sizes 5" - 27.5" Handheld Transmitter's dial allows you to instantly select one of the 8 levels of static stimulation; Use the buttons to deliver either the selected level of stimulation, 2 levels above the selected level, or to send a tone (beep) The Collar Receiver is waterproof and the Handheld Transmitter is Water-Resistant Replaceable 3-volt lithium batteries last about 6 months in the Transmitter and 1-2 weeks in the Receiver; Features a low battery indicator to let you know when to change the batteries The detailed Operating Guide with Basic Training Tips by Pro Trainer Charlie Jurney and a locally based Customer Care Center, available 6 days a week, provide support when you need it By designing our products in the field, with heat, cold, rain, snow, dust, mud, and wind in mind, SportDOG has become the most recognized brand in the electronic tracking and training categories, making the promise to always create "Gear The Way You'd Design It"