
I have been using this collar for several years, the first 5 years had no problems. Problems may appear after 5 years with a device, but this is completely normal. My advice as a dog trainer is to never use an e-collar unless you are a professional trainer and know what you are doing! Here are reports of the trainer's luck or the collar that gave the dog a wound on the neck. If used properly (applies to any training tool) it won't harm your dog, but you must know how to use it, so seek professional trainer help!

Dog Leash And Collar Set With 6 Length Choices (25FT, 15FT, 10FT, 6FT, 5FT & 4 FT) & 4 Neck Size Choices For X-Small To Large Dogs
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