Instruct: Classify an Amazon review as either positive or negative.
Query: Expiration

The product is great but unfortunately it doesn't last long...I bought mines in February of 2011 and it stop working May 12 2012 so basically you'll get a little more than a year out of it which sucks...So basically if you only need it for a short period of time and don't care to have any longer then it's a great product...There's no warranty beyond a little over 30 days.