We have been using this Mixer Grinder for the more than 7 years now and had been a truthful companion all along. It had even traveled with us to the UK and exhibited stellar performance. A very trust worthy mixer grinder with all the necessary and useful features. Lock functionality is a very intuitive safety measure that saved us at least couple of times. If there is more than 5 stars I would give that to this product. Excellent Panasonic(National).