This gauge works well and appears to be very accurate. It is easy to read and easy to use. Good buy. **UPDATE** After about 8 months the weight suddenly increased by 3-4 kilos. It was very accurate from the start. In my rating it cost two "stars". For your information. Lifetime guarantee, my Aunt Fanny. I registered my product as stated at the time of delivery. I then received an email from the manufacturer that my warranty was still valid and that I could reply to the email if there were any problems. I replied a few days ago when I discovered the problem and still haven't received an answer. What is the lifetime guarantee?