The Razer DeathAdder V4 Pro Niko Edition gaming mouse is a deadly weapon in the right hand. It barely tips the scales at just 57 g, so you can move it effortlessly. The Razer Hyperspeed wireless dongle is ultra-fast, so everything you do registers instantly. And its Focus Pro 45K Optical Sensor gives precise, reliable tracking on virtually any surface. Good to know - 150 hours of battery life means you won't be reaching for a cable mid-game - Razer Synapse app lets you customise your settings