Esky Dog Shock Collar 330 Yards Remote Training Collar with 3 Modes Humane, cost-effective and harmless to your dog. Advanced RF technology boosts range up to 300m With blue backlight, convenient and easy-to-read large LCD digital display Separate stimulation/vibration/tone/light function button control, easy to operate Support 1-16 intensity levels adjustment for stimulation/vibration, greater than others of 100 levels 100% tested product with 1 Year Free Replacement Warranty; BUY WITH CONFIDENCE