55g Ultra Lightweight Redefines the concept behind high-end gaming mice. A unique ultra-lightweight design ensuring maximum performance, while reducing wrist-fatigue. Perfect for high-intensity FPS games and more! Fan Favorite Pro Shape HELIOS II Pro is designed from massive feedback from the enthusiast and pro player community, in regard to specifications and the classic shape. A true fan-favorite shape perfect for pro players and gamers alike, due to its comfort and suitability for multiple grip types. High-Performance NORDIC ARM® CORTEX® MCU HELIOS II Pro features a high-performance Nordic 52833 ARM® CORTEX® MCU capable of low latency inputs and true 4K polling rate, giving gamers an advantage against others in their favorite games. Extremely low click latency and motion latency! True 4K Wireless Polling Rate HELIOS II Pro features a true wireless 4K polling rate, giving gamers unprecedented performance in their favorite games. Whether it be quick mouse swipes, or even needing to get the upper-hand during a clutch moment, Helios II Pro will deliver pure performance, every time. Designed to give an incredibly low motion delay and click delay. 100 Million Clicks Lifetime TTC... Fantech HELIOS II Pro features low-latency and reliable TTC Gold Optical Switches, designed for performance without unintentional double clicks! Rapid, durable and completely tactile. Pixart 3395 Sensor HELIOS II Pro features the world’s most highest-end & accurate Pixart Sensor, designed with 99.8% accuracy. Implemented using a low-latency MCU, for true groundbreaking performance in any game. F-Switch Tactile Scroll Wheel Encoder HELIOS II Pro includes a scroll wheel with unrivaled tactility, ensuring gamers and pros get maximum performance with even more reliability and well-defined steps in their favorite games. Strikespeed Tri-Mode Connectivity Fantech HELIOS II Pro features our signature Tri-Mode connectivity, with extreme StrikeSpeed low latency technology. No matter if you prefer wired, 2.4ghz wireless or even Bluetooth wireless freedom, we’ve got you covered. Universal Built Palm Grip Claw Grip Hand Profile: Right Hand Size: •Length: 17cm± •Width: 7.5-10cm Recommended Grip Style: •Palm grip (15-18cm) •Claw Grip (18-20cm) F-Switch Tactlie Scroll Wheel Encoder HELIOS II Pro includes a scroll wheel with unrivaled tactility, ensuring gamers and pros get maximum performance with even more reliability and well-defined steps in their favorite games. TTC Gold Optical Switches Fantech HELIOS II Pro features low-latency and reliable TTC Gold Optical Switches, designed for performance without unintentional double clicks! Rapid, durable and completely tactile.