Bought this several years ago and its still working great. The keyless concept is awesome, no more lock outs, forgotten keys, etc. The product has been problem free, the batteries last a long time (estimate 9-12 months), and it works every time. Only problem I had is that I dropped the battery case after a couple year and it cracked. Ordered a new one through their website and they sent it out free of charge! Kudos to them, I fully expected to pay for it. Based on my experience I'd highly recommend this product.