25% faster than competing wireless mice: razer hyperspeed wireless technology brings together extreme low-latency and interference reduction for true wireless freedomfocus+ 20k dpi optical sensor: offers on-the-fly sensitivity adjustment through dedicated dpi buttons (reprogrammable) for gamingfaster than traditional mechanical switches: new razer optical mouse switches uses light beam-based actuation, registering button presses at the speed of lightfull modular customizability: 3 interchangeable side plates with 2, 6 and 12-button configurationsup to 19 programmable buttons: allows for button remapping and assignment of complex macro functions through razer synapse