Dt Systems Ultra Min-E Bark Collar - $49.99

The ultra-small size of this lightweight, waterproof collar unit fits all dogs. The collar adjusts from 6-1/2" to 24". It has eight intensity levels, and the data memory system saves the last intensity setting used. Powered by replaceable 6-volt lithium or alkaline batteries, the system delivers 1/2-second corrective stimulation and has an automatic three-second safety delay. The vibration sensor in the digital system picks up your dog's vocal cord vibrations when it barks, triggering a correction. And it will not respond to extraneous noises or a dog's tags. The collar also has built-in magnetic on/off. An extra set of medium electrodes and sensor prongs are included.Dimensions: 1-1/4" x 1" x 1-7/8". Weight: 2 oz. - $49.99