https://www.extremedogfence.com/product-category/pet-accessories/collars/invisible-fence/ extremedogfence.com

Features:
Made in USA with Imported Parts
4 Progressive Correction Levels
Anti-Linger Technology
Low Battery Warning
Natural Rubber Comfort Contacts
Waterproof & SubmersibleFeatures:
Made in USA with Imported Parts
4 Progressive Correction Levels
Anti-Linger Technology
Low Battery Warning
Natural Rubber Comfort Contacts
Waterproof & Submersible