TBI Pro [Newest 2019] Rechargeable Bark Collar - Upgraded Smart Detection Module w/Triple Stop Anti Barking Modes: Beep/Vibration/Shock for Small, Medium, Large Dogs All Breeds - IPx7 Waterproof NEW QUALCOMM MICROPROCESSOR CONTROLLED BARK DETECTION - a break-through technology and innovative upgrades were implemented in the new version of No Bark collar featuring the newest Intelligent Anti-Injury Chip. The collar has 5 levels of adjustable sensitivity and 3 training modes - beep, vibration, and gentle, safe shock (no shock mode is an option as well), effectively stopping the barking with no harm to the dogs of all types.