It's quite clear from a few minutes use that Logitech have put their extensive expertise in peripheral ergonomics into designing the M560. Everything is positioned perfectly for a comfortable experience, without adding unnecessary bulk to the mouse.
Logitech describe it as ‘full-size', but we would have to disagree. It's large enough to be comfortable, but doesn't fill the hand like a full-size mouse.
Due to the wireless connectivity of the M560, it is a little heavier than similarly-sized wired mice because of the battery.
This particular model isn't rechargeable and is powered by a single AA battery which needs to be inserted into the underside. There is also a small slot in the underside of the mouse to store the nano-receiver when traveling.
The inclusion of a nano-receiver is a hint that this mouse uses a standard 2.4 GHz wireless connection to transmit activity, rather than Bluetooth.
The receiver is tiny and won't cause any headaches, unless your computer has a limited number of USB ports. It is actually Logitech's Unifying receiver which means you can connect up to six compatible devices through the same USB port.
We find the optical sensor on the underside of the mouse in the usual location. Logitech don't list a specific model or resolution for this, but claim that it's a ‘Laser Grade Optical Sensor'. Although this wouldn't be enough information for our usual ‘gamer' audience, the target customer of this mouse is unlikely to care. In our tests, it tracked accurately without any lag.
Logitech haven't been particularly generous with the size of the Teflon feet on the underside of the mouse, but they do make the mouse glide fairly smoothly on most of the surfaces we tried. This is important for the M560 and it's portable nature because it's likely that a mouse mat won't be available when traveling.
Even though the M560 isn't rechargeable, Logitech claim that the AA battery will last up to 18 months, meaning that you won't need to change it too often. The real world battery life will depend on how much you use it, though.