You're not gaming at your best if you don't have the Razer Viper Ultimate Hyperspeed Wireless Gaming Mouse. This super-fast computer mouse has new wireless sensor technology, allowing it to perform faster. The Focus+ optical sensor equips the mouse with reliable and accurate tracking abilities. Even with this new tech, the Razer Viper Ultimate weighs only 74 grams. So you'll hardly feel it in your hand as you move it about your desktop. Additionally, this wireless gamer mouse has up to 70 hours of battery life. You won't need to recharge it for days on end—and it may even last weeks depending on how long you game. Finally, this fast gaming mouse offers 20,000 DPI and nearly 100% resolution accuracy. You won't be caught off guard by your enemies with this mouse on your side.