... key work for Windows system.3. For Windows system, the PAGE UP key, PAGE DOWN key, HOME key, and END key work when ... with the FN key.4. For Mac OS system, the PAGE UP key, PAGE DOWN key, HOME key, and END key work when ... )Operation Current: <5mAStandby Current: 1.2mASleep Current: <0.7mATransmit Range: up to 10 metersStandby time: 20 DaysBattery rechargeable times: 500 timesThe ...