Razer Viper - Lightweight Esports Gaming Mouse with only 69g, Razer Opto-Mechanical Mouse Switches, Optimized Ergonomics & RGB ChromaRazer optical mouse switches: Pull out clutch tournament plays with a light sensor that registers clicks with zero false actuations the switches themselves are durable for up to 70 million clicks Razer 5G optical sensor: Engineered with up to 16,000 DPI sensitivity and a 99. 4 percent resolution accuracy the incremental advantage you need to edge out the competition Onboard DPI storage: Pre set up to 5 custom DPI stages on Razer synapse 3 and bring