Dogtra EF-Collar Extra Collar for EF-3000 Gold Containment System The Dogtra eF-Collar uses the state of the art microcomputer technology. The waterproof collar weighs only 4.7 oz and is fully rechargeable. The pager/ vibration signal that warns the dog prior to electrical stimulation /correction. eF-Collar Features: Collar Receiver Long Range Pager/Vibration Signal Rechargeable Recevier Weight - 4.7 o.z. Adjustable Intensity For A Variety of Dog Personalities Waterproof Collar **For Dogtra eF-3000 Gold Containment System**

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