Remote Control & Through-Wall Antenna: The dog training collar provides a 2000ft control range, making it free to train indoors or in the backyard without any delay in receiving signals, no more yelling and chasing there's a good boy! 3 INDEPENDENT AND ADJUSTABLE TRAINING MODES: Our vibration collar provides 4 humane operation modes: voice intercom, beep, vibration (0-100) and safety shock (0-100), allowing you to choose the most suitable According to the model level, correct bad behavior in time, and train dogs according to their ability. IP67 WATERPROOF COMPACT RECEIVER: The dog shockproof collar is designed with fully sealed technology, enjoy showering, swimming and stream hiking freely. In addition to the lightweight and compact size, it is perfect for small, medium and large dogs without any burden.​ Safety Lock & Dual Channels: The e-collar for dog training is equipped with independent buttons on the ergonomic remote control, which can be operated separately to prevent misuse and accidental impact, and switch channel 1 or 2 or 3 to train 3 dogs at the same time. Fast Charging and Long Lifespan: The electric dog collar lasts for 15-60 days after being charged for 2-3 hours, easy to charge with our car charger or power bank, no need to worry about electricity when we run or camp with our dogs insufficient.