1)RECHARGEABLE & IPX7 WATERPROOF RECEIVER: Built-in rechargeable 300mAh Li-ion battery supports up to 14 days of continuous use on a single one-hour full charge. IPX7 waterproof rate enables your dog to run in the rain, ideal for indoor and outdoor use.
2)NIGHT REFLECTIVE & SAFE: The collar is reflective to keep your dog in sight and safe at night. The sensor will enter auto-protection / Sleep Mode for 1 minute if it has activated more than 7 times.
3)FIT ALL SIZES OF DOG: Coming with a release buckle, the nylon collar strap is adjustable, suitable for all sizes of dog, weighing from 6 - 120lbs.