Wireless technology is faster than wired speeds, and LIGHTSPEED has been updated to 2.0 to reduce latency and can be paired with mouse receivers; The speed and superior performance of optical micro-motion, combined with the satisfying click feel of mechanical micro-motion, provide players with a sense of improved comfort. ~ Product Size: 120 x 64 x 39 mm Product Weight: 86 g HERO 25K Sensor: 25,600 DPI enables sub-micron accuracy and more efficient power consumption, further extending battery life. DPI: 100-25,600dpi Buttons Number of buttons: 6 (Left/Right-click, Back/Forward, Scroll-wheel with middle click, DPI) Battery Battery type: 1 x AA battery (included) Battery life: 300h Connection Type: Lightspeed Wireless + Bluetooth Wireless range: 10 m wireless range Accessories Included: Gaming mouse x1pc, Lightspeed USB receiver x1pc, USB extension cable x1pc, Grip anti-slip x1pc, AA battery x1pc ~ • Return and refund are not accept. • Free shipping to HK/Macau when spending over $500 onwards • China area shipping fee $130 + Local SF Express + Local SF Express • Two business day shipping. Sent via SF express • Exchange of defective units purchased in 7 days ~ *Photo for reference only