... requirement, effectively avoid the interference between the wireless devices.2.4G wireless transmission can reach 10 meters barrier-free ... have 7 mouse button,mainly design for game playerKeyboard have 19 hot key,multimedia,very convenientMultiple auto dormancy function, ... /7Certification: CE, FCC, ROHS passedPacking contents: 2.4G wireless mouse keyboard combos, super mini receiver, 2 AAA batteries ...