The Petsafe Premium Deluxe Bark Collar PDBC-300 is a very light-weight collar that can be used on dogs 8 pounds and greater.  This model has 3 different correction modes, each mode consisting of six levels of static correction.  As with the other Petsafe bark collars, this unit employs a dual-sensor mechanism to detect your dog's barking and correct it.  The first sensor is a vibration sensor that detects the vibration of your dog barking.  The other sensor is a microphone.  These two sensors work in tandem and only trigger a correction when both vibration and sound are detected from your pet. 

Battery Info

RFA-67

6 Volt lithium  Battery life expectation is approx. 30 days depending on frequency of use

All PetSafe Accessories

Features

Recommended for dogs 8 pounds and greater
Eighteen settings for correction (Three modes, six levels for each mode)
Progressive correction feature increases correction to next strongest level (in current setting only) if dog continues to bark
Safety time out will shut off the correction for 3 minutes if the dog barks more than 15 times in 50 seconds
Sensor probe cannot be removed or adjusted
Cannot attach leash to collar
Correction that automatically adjust to your dog's temperament
The most reliable bark detection technology available
Low battery indicator

Collar Specifications
Height: 1"
Width: 2"
Depth: .75"
Weight: 1.5 oz
Uses medium Contact Points
One black plastic sensor probe, center
Uses PetSafe RFA-67 battery
5 position turn switch