PetSafe NanoBark 2.0: Small Dogs, Necks 4–15 in, 7 Days

Why it matters

NanoBark 2.0 is sized for small dogs with 4–15 in necks and weights from 8 lb. Variable Pulse alternates correction levels, and it recharges for up to 7 days.

Who it's for, and who should skip it

Good fit if

Small dogs
Narrow necks
Rechargeable preference

Look elsewhere if

Dogs barking from fear or separation anxiety
Puppies under about 6 months
Unsupervised all-day wear

Pros and cons

Pros

Small fit
Rechargeable
Known brand

Cons

Static
Price
7-day battery

Limitations to weigh

Find out why your dog barks first: boredom, fear, separation distress and alerting all need different fixes, and a bark collar can make fear or anxiety worse.
Automatic collars correct every bark they detect, including alarm or distress barks; never leave one on an unsupervised dog for long periods.
Follow the maker's wear limit (often no more than 8 to 12 hours a day), check the neck daily and move the unit to avoid pressure sores.
Static modes are aversive; welfare groups advise trying beep and vibration, enrichment and training before any static correction.

Specifications

Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.

Price	$100.99	Maker
Model number	PBC00-18240	Maker
Neck size range	4-15 in, dogs 8 lb and up	Maker
Min dog	8 lb and up	Maker
Battery	Rechargeable; up to 7 days per charge	Maker
Correction	Variable Pulse (alternating levels)	Maker