" Higher Hump Narrower Waist - Elevated rear hump and a more slender waist in contrast to the standard X2 mini model. Offers improved stability for those who adopt a more aggressive claw grip, as well as enhanced support for the palm when it's resting on the mouse. Upgraded internal structure - Perfected through learning from the standard X2 mini, Ensuring a shell rigidity and consistent, satisfying clicks with a Sturdier Structure and Indirect wheel clicks provides smoother rotations without any rattling Speed of Light Optical Switches - Minimizing the chances of unintended double clicks, these switches ensure swift and pinpoint responses. Paired with the Pulsar Blue Encoder, which offers a delightful tactile rotation experience, all within a dust-proof structure. Cutting-Edge Sensor Technology - Featuring PixArt’s PAW3395 sensor with integrated Motion-Sync Technology, it boasts impressive capabilities, including 650 IPS speed, 50g acceleration, programmable DPI up to 26,000, and a rapid 1000Hz / 1ms polling rate. Plus, it's 4K Polling Ready when used with the included 4K wireless dongle. Cutting-Edge MCU Power - Fuelled by a Nordic MCU, this technology is the epitome of efficiency and blazing-fast processing. It's the secret behind our extended battery life and pinpoint-precise battery status readings. Experience up to a remarkable 100 hours of usage, all at a hyper-responsive 1000Hz polling rate."