Bought this logitech M185 wireless mouse from local shop for Rs540 and I can say it is the best wireless mouse I have ever used.even after 1 year its working like a charm here are the pros of this product.
1) shape is perfect to fit into thr hand nice curvy design for good grip.
2) sensors are superb works flawlessly.
3) light in weight as compared to lenovo and dell mouse.
4) uses single AA size battery which is easy to find in market
5) doesnt uses much power a typical eveready battery last for 6 months.
Thumbs up.go for it