The SportDOG NoBark 10R collar lets you customize the type of bark control that works best for your dog. Automatically stops barking 3 correction modes to fit your dogs temperament 3 color indicator light displays mode and low battery DryTEK waterproof design technology Waterproof and submersible to 25ft, per NEMA 6P and IP67 standards PerfectBark technology eliminates false corrections 10 levels of correction Tone only button Long-life rechargeable battery Display indicates correction level and battery condition Bark Control Collar Battery Charger Operating Guide Select from Temperament Learning, Progressive Correction or User-Selected Correction modes. PerfectBark technology provides firm, fair and consistent bark control, requiring BOTH vibration AND sound to trigger a correction. The automatic safety shut-off eliminates the risk of overcorrection. Hear the quiet? SportDOG Brand. Gear the way youd design it.