KOOLKANI&reg; 650 Yards Remote Dog Training Collar Obedience Trainer:Rechargeable Waterproof Collar w/10 Levels of Adjustable Static Stimulation,Beep Tone and Vibration (One-dog Trainer) Intuitive control of tone,vibration, and static impulse stimulation; each correction method offers 0-10 adjustable levels; This dog remote trainer can get each dog's instant attention with a vibration alert by pushing a single button; Rechargeable dog collar receiver with lasting battery life, one single full charge lasts up to 7 days, great for multiple training sessions without worrying about the battery; Collar strap adjustable from approx 20cm to 61 cm (from approx 8" to 24") OR use your own collar strap as long as it does not exceed 2mm in thickness. Genuinely 100% waterproof and weatherproof dog collar receiver. Great for indoor or outdoor behavioral and obedience training, field trip, hunting. Your dog can wear it without worrying about water or rain;