4D 2.4GHz Wireless Mouse Connection:2.4GHz RF Wireless Sensor: Optical Sensor Switch Lifecycle: 3 million cycle Ergonomic design educe plam fatigue when use for long time

4D 2.4GHz Wireless Mouse Connection:2.4GHz RF Wireless Sensor: Optical Sensor Switch Lifecycle: 3 million cycle Ergonomic design educe plam fatigue when use for long time

Cable Length: 1.6m Interface: USB 2.0 Sensor: Optical Sensor Ergonomic design educe plam fatigue when use for long time

3D Wired Optical Mouse Cable Length: 1.6m Interface: USB 2.0 Sensor: Optical Sensor Ergonomic design educe plam fatigue when use for long time