3 MODES WITH 16 LEVELS: Use the vibration or static correction modes with 16 different adjustable levels to find the perfect setting for your dog. Plus, this dog training collar with remote is equipped with a beep sound to condition your dog into not needing vibration or static correction! GREAT FOR BEGINNERS OR PROS: The blind operation on the dog shock collar with remote makes it easy to use for both expert and beginner trainers alike. RECHARGEABLE & WATERPROOF: The shock collar for medium dogs is equipped with a long battery life and durable materials so it can suit any dog’s lifestyle. The item should be charged for at least 4 hours before initial use. UP TO 650-YARD RANGE: Train your pet confidently with a long-range collar that works up to 650 yards, perfect for open fields or large backyards. Performance may vary with weather, terrain, and interference from other devices. For the best performance hold the transmitter up-high. 1-YEAR PROMISE: Have any issues with your shock collar for large dog? Just contact our 24/7 customer support team.50