10 meter wireless transmission- Reliable 2.4G wireless connection up to 10 meters.- 12 months battery lifeWith Rapoo's latest energy saving technology, you can use your keyboard without power interruption for up to 12 months.- Media control- Fn key gives you quick access to media player, homepage,volume adjustment and etc.- Spill-resistant- Spill-resistant keyboard design. No more worries about a defect keyboard as a result of accidental spills