GROOVYPETS 650 Yards Remote Dog Trainer Rechargeable Waterproof Collar w/Adjustable Static Stimulation,Intuitive Tone and Vibration (Two-Dog Trainer) ONE YEAR FULL PROTECTION WARRANTY! MOST USER-FRIENDLY REMOTE DOG TRAINER:Train one dog at a time or two dogs at the same time by pushing a single button; SOLID BUILD WATERPROOF RECHARGEABLE SMALL SIZE LIGHTWEIGHT REMOTE DOG COLLAR RECEIVER: Suitable for indoor and outdoor field trips or hunting. 100% waterproof and long lasting battery (up to 5 days battery life); GREAT REMOTE RANGE FOR DOG OBEDIENCE TRAINING: 600 meter/650 yards remote range is probably more than enough for average users; ONE SIZE REMOTE DOG COLLAR FITS ALL: The high quality training collar for small, medium and large dogs can easily fit 20CM-62CM(7"-24") neck size. You can re-size it or use your own. HUMANE REMOTE DOG TRAINING COLLAR WITH UNIQUE EFFECTIVE CORRECTION FEATURES: Adjustable Tone, Vibration and Static stimulation collar (not electric shock collar) to meet different remote dog training needs