... .4G mini Wireless keyboard suitable for windows,android, linux,mac OS Used for pc,laptop, android Nice RC11 air mouse ... 4GHz DSSS radio transceiver,30m max distance•Powered by 3 x AAA battery (Not included)•System requirements: Windows 98/ ... Android,Linux,Mac•Product size (L x W x H): 20.0 x 5.6 x 2.5 cm•Package size (L x W x H): ... 23.5 x 6.8 x 3 ...