SD-1875 Series Accessory: The SportDOG UplandHunter Accessory Beeper is a manually-operated beeper with a 500-yard range and 9 selectable audio tones for easy-to-use effective multi-dog training Customizable & Humane Training: System offers tone, vibration, and 7 static levels for flexible corrections with a lightweight, waterproof collar; fits dogs over 8 lbs with neck sizes 5-22 inches Durable & Travel Friendly: Rugged, submersible design with quick-charge rechargeable batteries and low battery indicators for reliable outdoor training Built for the Field: SportDOG gear was designed by professionals who demand durable, no-nonsense tools that perform in real-world conditions without fail Trusted by Serious Trainers: Professionals rely on SportDOG for proven performance, consistent control, and expert-backed training guidance that gets results