Razer Optical Mouse Switch | The Razer Viper features the all-new Razer Optical Mouse Switch for the fastest and most precise clicks in town. We've designed a mouse switch that... | By
2Pcs Micro-Switch For Razer Viper V2 Mini&V2 PRO Wireless&Viper V2 Optical Mouse – ASA College: Florida
Razer's Viper mouse uses optical switches to get that perfect headshot | Engadget