I bought two of these back in May and it was the best purchase I have made in a long time. I bought a wallet earlier this year and it came with an Elster tracking card and it was the most useless piece of junk I’ve ever had. So much so I contacted the company and got it replaced and the replacement was the exact same. The Keysmart Smartcard is cheaper and so so so much better than its more expensive competitors. If you’re on the fence because you think more expensive means better, trust me, this is the card you want. Love this product, great battery life, great tracking. I recommend it to all my friends