Product description microsoft l6v 00004 device interface rf wireless movement detection technology blue track suitable for office colour black item format right handed wireless receiver interface usb source batteries battery type aa life of battery 12 months supports mac operating system mac os x 10 7 lion mac os x 10 8 mountain lion mac os x 10 9 mavericks minimum disk space 150 mb width 7 49 cm depth 9 82 cm height 5 67 cm