Imarku Bark Control Collar Newly Update with 7 Levels Sensitivity

Collar features
High-quality Electronic Anti-Bark Dog Collar and Sends harmless warning sound and shock to the dog whenever it barks with automatically repeated through 7 correction levels
Warning sound and vibration collar - no shocks - very humane and safe. Throat vibration activated collar
Up to 7 corrections with the combination of warning sound and vibration. Shuts off after the 7th correction for 1 minute to protect your dog. Water-resistant collar(Not waterproof)
Specification-Collar: Length: 7cm Height: 3cm Width:3.5cm. Collar length adjustable from 20cm to 75cm.Generally recommend for 18-120lbs dogs. Included 6-Volt Battery (Compatible with the battery model, such as 4LR44)

How it works
Simply place the Collar on your dog. When your dog barks, the system will detect the barking behavior and administer a static correction. It begins with the lowest level of correction and increases through the seven levels each time she barks, which will be triggered by your dog's successive barks. When stop barking within 30 seconds, the collar will reset itself to the lowest level. Otherwise ,a louder warning tone will sound.
When using your Bark Control Collar for the first time, fit the adjustable strap to your dog and wait nearby until your dog barks. Most pets will quickly understand the new sensation is telling her to be quiet.

Package
1 x No bark receiver
1 x Adjustable Nylon Belt
1 x Test Bulb
2 x Long shock electrodes
1 x Use manual