Logitech G603 Lightspeed Key Features Wireless Mouse 200-12000 Adjustable dpi 6 Programmable Buttons HERO Optical Tracking 1ms Lightspeed Response Time Up to 18 Months Battery Life (LO Power Mode) Overview The Logitech G603 Lightspeed is the perfect combination of wireless freedom and high-end gaming specs, making it one of the best wireless gaming mice out there. With a 1ms response time when using the HI power mode and Lightspeed USB receiver, you will not feel even the tiniest delay. With six programmable buttons, the G603 Lightspeed can be customised to fit whatever your needs, no matter what game you are playing. If Lightspeed is not for you, or you just do not feel like gaming at the moment, then you can even connect up with Bluetooth, freeing up the USB port for another device. Specifications Design Right-Handed Sensor HERO Optical Tracking Resolution 200-12000 dpi Number of Buttons 6 Connectivity Bluetooth, Lightspeed Wireless USB Dongle Wired/Wireless Wireless Rechargable No, removable battery Colour Black Dimensions 124 x 68 x 43 mm Weight 88.9g