Logitech M705 Marathon Wireless Optical Mouse with 5 Programmable Buttons Black 910-001935 - Best Buy
Logitech M705 Marathon Wireless Mouse, 2.4 GHz with USB Unifying Mini-Receiver, 1000 DPI Laser Grade Tracking, 7-Buttons, Extra Thumb Buttons, 3-Year Battery Life, PC / Mac / Laptop - Black : Amazon.co.uk: