This bark collar has only two skin sensors and weighs only 3 oz, but it does the work of the big boys!

When annoying barking begins, the bark collar's sensitivity setting senses the vibration of the dog's vocal cords and administers a brief 1/2 second harmless but unpleasant correction. If barking continues for another 3 seconds, another correction is given and repeated at 3 second time-out intervals until the barking stops.

The dog learns very quickly that the barking initiates the correction, stops barking, and the training is complete.

BC-200 Deluxe Innotek Bark Collars Feature:
• Small, 2.5 ounce collar box unit
• Correction levels to suit every dog's temperament - very low stimulation for very sensitive dogs to much higher levels of correction (still harmless but more unpleasant) for the stubborn barker.
• The collar can only be activated by the barking of the dog wearing the collar, not by other dogs' barking or loud noises nearby.
• Bark collar can be used indoors or out, while you're home or away.
• Free training DVD included
• Recommended for barking dogs 5 to 100 lbs.
• Limited Lifetime Warranty

Two models to choose from
Economy Model BC-50B is water resistant, uses 6 volt replaceable battery (included) and comes with a receiver, nylon buckle collar, battery, DVD and instructions INNBC50B	Deluxe ModelBC-200 Bark Collar Unit is waterproof, has a maintenance-free rechargeable NiCad battery (recharger included) , and comes with a receiver, nylon buckle collar, recharger unit, DVD, and instructions INNBC200 (purchase below)