SportDOG Brand FieldTrainer 425X/SportHunter 825 Add-A-Dog Collar - with Tone, Vibration, and Shock

Collar Receiver only; expand your current system or replace an old collar Compatible with the SportDOG Brand FieldTrainer 425X (SD-425X), 425 (SD-425), SportTrainer 575 (SD-575E), 875 (SD-875E), and SportHunter 825X (SD-825X), 825 (SD-825) Waterproof and submersible to 25 feet using DryTek technology Fits dogs 8 pounds or larger with neck sizes 5"-22" Rechargeable lithium-ion battery with 2-hour quick charge; features a low battery indicator to let you know when to charge Detailed operating guide and a locally based Customer Care Center, reachable via call, email and live chat