Legit Reviews posted a review on the Logitech MX Anywhere 2 Wireless Mouse
A quote from the article:
This month, Logitech released their most advanced wireless mouse ever, the Logitech MX Anywhere 2 Wireless Mobile Mouse. The mouse features something marketed as dual-connectivity, which in layman's terms means that the Logitech MX Anywhere 2 Wireless Mobile Mouse can connect Windows or Mac computers with the included Pico Unifying USB Receiver or through Bluetooth Smart technology. More importantly the mouse features a Darkfield laser sensor that functions on pretty much any surface as long as they are 4mm thick...Logitech MX Anywhere 2 Wireless Mouse Review @ Legit Reviews