1000m Range & Long Battery Life: With a range of up to 1000m in an open area, this collar will help you easily train your dog indoors and outdoors. The battery provides up to 20 days of use on a 2-hour charge. 4 Effective and Harmless Modes: Sound, Light, Vibration (99 levels adjustable), and Static Shock Mode (99 levels adjustable). The training modes can be adapted to dogs according to their weight and temperament. Put an end to your dog's bad behavior with the help of this collar. Built-in LED Light & Suitable for Dogs of All Sizes: A built-in LED light is convenient for you to find your dog in a dark environment. This durable and adjustable TPU collar (16 - 62cm) to fit dogs of different sizes. 100% water resistant and can control up to 3 dogs at the same time: This collar is IPX67 certified water resistant, making it ideal for dogs who love to have fun in the water. The remote has 3 channels, syncing with 3 different collars, which helps you train up to 3 dogs at the same time.