Dog Expedition TC1 Add-on Border Patrol Collar

D.E. Systems Border Patrol Additional Collar: Waterproof collar: 3.25" x 1.75" x 1.75" 10 oz (27" strap) Border patrol collar is recommended for dogs 30 lbs or larger Expandable to 5 dogs with add-on (TC1-Add) collars Warning Zone notifications: collar can be programmed to vibration or audible beep (other options for Warning Zone notifications are vibration or beep followed by delayed stimulation) Waterproof training collar comes with rechargeable lithium-ion batteries Battery life varies depending on settings: typically 12-24 hours for collar