Note: Garansi Resmi 1 Tahun Microsoft Indonesia Microsoft Designer Bluetooth Desktop Keyboard dan Mouse 7N9-00028 Tech specs Interface :Bluetooth Low Energy Compatible 4.0 Operating System :Windows 10, 8.1, 8, RT 8.1, or Windows RT 8 Mac OS 10.8-10..10; iOS Android 4.2-5.0 Wireless Frequency: 2.4 GHz; Range: 32 feet open air, 16 feet in typical office environment Mouse features :Microsoft-proprietary BlueTrack Technology, 3 buttons, standard vertical scrolling Power requirements :Keyboard: 2 AAA alkaline batteries (included) Mouse: 2 AAA alkaline batteries (included)