SportDOG Brand Field Trainer SD-425X Remote Dog Training E-Collar System - With PetsTEK Multipurpose TowelSportDOG SD-425X remote training dog collar is a safe and effective system for behavior and fieldwork training. This remote dog trainer is an excellent choice for basic obedience training entry-level fieldwork hunting and camping. The system is expandable to two or three dog system with additional collars that you can purchase separately.The SportDOG SD-425X - Handheld Transmitter is designed with you in mind. Static stimulation tone and vibration buttons are customizable to best suit your and your dogs training style. The convenient front-facing Intensity Dial with 7 stimulation levels can be controlled with one hand. Focus on dogs in action and not on the equipment.Features:- Safe Effective and Humane Remote Dog Trainer with 3-Training Modes:--- 21 Stimulation Levels Nick/Continuous Correction--- Vibration--- Tone- Ergonomic Remote Transmitter:--- Front-facing Intensity Dial for one-handed operation--- Seven selectable stimulation levels--- Up to 500-yards range- Small and Light Receiver Collar:--- Designed for small to large dogs 8 lbs. and up--- Fits neck size between 5” and 22”- Remote Transmitter dimensions - 5.3”L X1.7”W X 1.0”D- Receiver Collar dimensions without strap - 2.6”L X 1.3”W X 1.23”D- Rechargeable batteries with a quick 2-hour charge- IP67 Waterproof and submersible up to 25ft- Package contents: Remote Transmitter Collar Receiver on 3/4" collar strap lanyard charging adaptor standard contact points long contact points basic training manual test light and PetsTEK multipurpose pet towel