The ultra-thin keyboard and compact mouse are custom-made for office, home and traveling. No driver required, just plug and play, so you’re able to enjoy high convenience. Battery Replacement Reminder Feather with low battery warning, the mouse will send red alert to draw your attention when the battery is going to run out of power. Auto Power-saving Mouse The wireless mouse has intelligent power saving design. The light-sleep mode begins if without operation for 1-second, the middle-sleep mode comes if you haven’t used the wireless mouse for 60 seconds and 8-minute inactivity will initiate deep-sleep mode. Move the mouse under light and middle level sleep or press any key under deep level sleep to activate it. Package Contents: 1 x Wireless Keyboard 1 x Wireless Mouse 1 x Unifying USB Nano Receiver 1 x User Manual