Get ready to experience the all-new redesigned Halo Collar 4 with dual-frequency GPS technology! This powerful dog collar lets you create virtual fences anywhere with ease using the Halo app, halo dog fence keeping your pet safe and free to explore in all weather conditions. Whether you’re by the lake, in the snow, or at home, Halo Collar 4 provides unmatched security and fun for your dog. See why dogs get excited for outdoor adventures with Halo.