Pleasant design, great feel, great area sampling, no dropouts and long battery life ... once charged and the battery lasts and lasts and lasts. However, the price for all online stores is completely covered. If you order the mouse directly from HP ([...]), you pay just 49.99 and shipping is also free. You do not register and pay through PayPal, you can also. So why spend more than 60Euro in Amazon if you get it from the manufacturer for 49.99.