About the gaming mouse sensor: The next-gen mouse sensor delivers up to 10x the power efficiency of other gaming mice with exceptional accuracy and responsiveness thanks to 400 IPS precision and up to 12,000 DPI sensitivity. Wireless: Ultra-fast wireless technology gives you a lag-free gaming experience. The G305 wireless gaming mouse delivers incredible responsiveness and reliability with a super-fast 1 ms report rate for competition-level performance. Extremely long battery life: The G305 wireless mouse from Logitech features an incredible battery life of 250 hours of continuous gameplay on a single AA battery so you can play at your peak without worrying about running out of power. Lightweight design: Thanks to an efficient mechanical design, the G305 gaming mouse weighs only 99 grams for high maneuverability. Portable convenience: The durable, compact design with built-in storage for the USB receiver makes the G305 easy to take with you. Note: For wireless mice, the USB receiver is included inside or with the mouse.