Smart Shock Collar for Dogs Upgraded Dog Bark Collar with Barking Detection Technology 5 Adjustable Sensitivity Levels of Vibration and Static Shock Barking Dog Deterrent for Small, Large Dogs Office & School Supplies World’s first to combine SSD IT5O075139 World’s first to combine SSD storage with additional data and display output ports delivering high speed transfers and ultra convenience COMES IN SET OF 2 – We’re offering you a durable so you can be confident that your satisfaction is always our #1 priority and that we'll do everything in our power to make sure you have an excellent customer experience ✅ UNIQUE DUAL SETTING TECHNOLOGY: The new dog shock collar is an upgraded bark collar device that can vibrate first followed by a static shock or vibration mode only