SteelSeries Aerox 9 WirelessOpticalGaming MouseUltralight design one of the lightest MMO/MOBA mice weighing 89 g, ideal for long gaming marathons in games such as Final Fantasy XIV, World of Warcraft, Guild Wars 2, Elder Scrolls Online, League of Legends, DotA 2 and many others.Full Customization 18 programmable buttons, a 12-button side panel, and a tilt-click wheel allow for endless key combinations. Customize every click with ease using the built-in SteelSeries Engine software.Universal AquaBarrier protection with an IP54 rating, protects the mouse from water, dust, dirt, and more.Next-generation dual wireless connectivity Quantum 2.0 wireless without lag with flawless 2.4 GHz connection for gaming and Bluetooth 5.0 for on-the-go use.Ultra-long battery life Play for up to 180 hours. Quick charge can provide 40 hours of play with a 15-minute plug-in.Impressive precision the revolutionary TrueMove Air sensor gives you complete control with tilt tracking, delivering 18,000 CPI, 400 IPS, and 40G acceleration.