广告New Halo Collar 4: The world’s safest GPS dog fence, now with with dual-frequency GPS. New Halo Collar 4 with dual-band GPS ensures unmatched accuracy & fits dogs big and small

广告Designed for Safe, Reliable Training Anytime, Anywhere. Perfect for Dogs of All Sizes. For Large Dogs. For Small Dogs. For Stubborn Dogs. For Multiple Dogs. For Walking & More.