» USB-Rechargeable with a charge life of 10 hours. » High Visibility - Ultra-Bright L.E.D. lights that make your dog visible up to 200 yards away. » 3 Light Modes - Switch between a slow flash, fast flash, and constant light mode. » (!)NEW(!) Water-Proof - IPX7 Waterproof Rating | 3ft of water for 30 minutes. » Reflective Stitching - 3-M reflective high visibility stitching. » Super Adjustable - Easily tighten or loosen the collar. » Top-Quality Design and Materials - Our L.E.D. Collars are pull-tested and will not hurt your dog when they pull hard. The collar is durable too.