I buy philips QT4001/15 pro skin advances Trimmer from a popular online shopping website on 25-march-2017 and now it is 17-nov-2018 and I am using it regular and haven’t face any kind of problem accept battery timing. It need re-recharge after every second shave and take a lot of timing in charging process I charge it for at least 3 hours so it perform good. it speed decrease wile discharging . rest every thing is great very simple to use. great build quality.