Razer Viper Ultimate - Not all wireless mice are made equal Meet the gaming mouse that\'s powered by an ultra-fast wireless technology engineered for pro-grade performance. Featuring 20, 000 DPI resolution for extremely precise tracking, optical mouse switches that actuate at the speed of light, and up to 70 continuous hours of play. Ultra-Fast Razer(TM) Hyper Speed Wireless Technology - Faster than other wired gaming mice With a high-speed transmission, extremely low latency, and seamless frequency switching in the noisiest environments, you won\'t even realize that you\'re gaming with a wireless mouse. Razer(TM) Focus+ 20K Optical Sensor - For cutting-edge precision A 20, 000 DPI sensor with 99. 6% resolution accuracy ensures that even the finest movement of your mouse is tracked, giving you an acute level of precision for game-winning headshots and highly elusive manoeuvres. 74g Lightweight - Designed for Esports - For swifter, controlled swipes The Razer Viper Ultimate is the lightest wireless gaming mouse making no compromise on strength with its true ambidextrous form factor. Its optimal weight is designed for faster and smoother control. Razer(TM) Optical Mouse Switch - For actuation at the speed of light Every click you make is actuated at the speed of light with no debounce delay, so you\'ll always be the first to pull the trigger. The switches are also durable for up to 70 million clicks. Up to 70 Hours of Battery Life - For non-stop gaming Improved wireless power efficiency keeps it running at peak performance for up to 70 continuous hours--charge it once a week to power 10 hours of daily gameplay. Razer Chroma(TM) Mouse Charging Dock - With personalized RGB lighting effects Comes with a mouse charging dock powered by Razer Chroma(TM)--featuring 16. 8 million colours and signature lighting effects. Get 5 hours of wireless playtime for every 10 minutes of charging. Specification True 20, 000 DPI Focus+ optical sensor with 99. 6% resolution accuracy Up to 650 inches p