mouse works great no box.

HERO Gaming Sensor: Next-gen HERO mouse sensor delivers up to 10x the power efficiency over other gaming mice with exceptional accuracy and responsiveness thanks to 400 IPS precision and up to 12000 DPI sensitivity LIGHTSPEED Wireless: Ultra-fast LIGHTSPEED Wireless technology gives you a lag-free gaming experience. The G305 wireless gaming mouse delivers incredible responsiveness and reliability with a super-fast 1ms report rate for competition-level performance. Mechanical Button Tensioning System Ultra-Long Battery Life: The G305 wireless Logitech mouse boasts an incredible 250 hours of continuous gameplay on a single AA battery so you can play at peak performance without worrying about running out of power Lightweight design: Thanks to an efficient mechanical design, the G305 gaming mouse weighs in at only 99 grams for high maneuverability Compact, portable design with convenient built-in storage for included USB wireless receiver. Max. speed: > 400 IPS Portable Convenience: The durable, compact design with built-in USB receiver storage makes the G305 means you can take it with you.