ship from Japan Color/design: metallic blue / lightweight honeycomb shell design Ultra-weave cable for durability and flexibility Pixart optical sensor with 16000 DPI support OMRON switch that can withstand 20 million clicks RGB LEDs on the logo and wheel at the rear of the unit Two side buttons for customizable functionality (for right-handed users) Low-friction PTFE mouse sole allows for light, gliding mouse operation Water and dust repellent coating on the circuit board reduces the risk of malfunction due to dust intrusion and hand sweat