I love this Dog Training Collar. It's by PETDIARY. It fits any size dog from small, medium to large. This collar has vibration, beep and static shock you pick the option that works for you. Great for keeping your dog under control. This collar is waterproof so getting in the water is nothing to worry about if your dog loves water. This collar can't be in water for long periods of time. The collar stretches from 8.5 inches to 25 inches and the weight limits is 10 lbs to 100 lbs. Has a large LED back light for easy to see and read the signals. This collar has 1000 foot range which is great for big yards. It has a 2 hours charge time which is a really fast charge time. With your purchase you get a remote control transmitter with a lanyard, collar/receiver, reflector strap, adaptor, 2 pairs of contact points, 1 pulse tester, 1 user manual and a usb charging cable. Make sure you use proper treatment and care of your pet. Read and follow the instructions. Your pet is your family member and your baby. Do not torture your furbaby! Use with care!