text: I would caution anyone from purchasing this item which does not qualify for a return even if defective. The original manufacturer A&D Medical claim this product is not allowed to be sold to the public as it is made for the Veterans Association and that it had to be sold by a gray market re-seller. Heart Rate Monitors USA the re-seller as listed on the Amazon Website stated that any claims had to be handled by Amazon as it was fulfilled by Amazon under the FBA program and they could not assist. After 2 hours of chasing I was able to get in touch with customer service at Amazon who despite thier protests that the product did not qualify for return finally agreed to refund the amount paid after I had threatened to dispute payment on the credit card charge. Amazon was the only party willing to step up to the plate to sort it out. The rest of those involved were totally disinterested. Buyer beware that the Lifetime Warranty as offered on the box is not a warranty as it appears