TLOG Anti Barking Device, Waterproof Outdoor Sonic Bark Deterrents with Adjustable Ultrasonic Level Control, Bark Control Device, Dog Bark Control Up to 50 Ft. Range Safe for Small Medium Large Dogs hollandandbarrett 4 sizes for your choice

4 sizes for your choice Size A: 4

will not produce a lot of wind resistance

Moisture is instantly absorbed and wicked away from your dogs fur for comfortable

The springs are used separately

magnesium ascorbyl phosphate

TLOG Anti Barking Device, Waterproof Outdoor Sonic Bark Deterrents with Adjustable Ultrasonic Level Control, Bark Control Device, Dog Bark Control Up to 50 Ft. Range Safe for Small Medium Large Dogs hollandandbarrett 4 sizes for your choiceTLOG Anti Barking Device, Waterproof Outdoor Sonic Bark Deterrents with Adjustable Ultrasonic Level Control, Bark Control Device, Dog Bark Control Up to 50 Ft. Range Safe for Small Medium Large Dogs Features: Uses ultrasonic sound to deter unwanted barking Detects barks up to 50 feet with the use of an internal microphone 4 Levels of operation including a test mode Durable and weatherproof for outdoor use Two color LED for good low battery indication