Wireless gaming mouse with charging dock. Razer chroma RGB. Not all wireless mice are made equal. Ultra-fast Razer hyperspeed wireless technology. Faster than wired gaming mice. Razer optical mouse switch. For actuation at the speed of light. 5 on-board memory profiles. To access personalized settings anywhere, anytime. 75 g lightweight - designed for esports. For swifter, controlled swipes. Razer focus+ 20K optical sensor. For cutting-edge precision. Up to 70 hours of battery life. For non-stop gaming. Razer chroma mouse charging dock. With personalized RGB lighting effects. Razer hyperspeed delivers with fastest wireless gaming performance (Information is accurate at time of printing), at least 25% faster transmission speed than any other gaming mouse. Offering the lowest click latency, improved power and efficiency and seamless frequency hopping to maintain peak stability, in even the noisiest environments. 25% faster. What's Inside: Razer viper ultimate gaming mouse, Razer chroma mouse charging dock, USB wireless dongle, charging cable, important product information guide. This is esports. This is teamrazer. The Razer viper ultimate is designed and engineered with Team Razer athletes - delivering weireless performance faster than wired mice. The wireless speed on this mouse is really fast and it doesn't feel like I am playing on wireless. The seonsor is very accurate too which is important when you need to kill your opponent fast, perfect for intense games like CSGO. - Epitacio Taco Del Melo, MEBR, CS/GO. What's Needed: Product Requirements: PC with a free USB port. Razer Synapse 3 Requirements: Windows 7 64-bit (or higher). 2 year warranty. FCC listed. UL listed. Complies with CAN ICES-3 (B)/NMB-3(B). razer.com/esports Designed and engineered by Razer in California.