Withings WS-30 Wireless Scale The Withings WS-30 Wireless Scale lets you have control over your fitness while making your life simpler. The scale connects to your computer via Wi-Fi connection and syncs data to your personal Withings dashboard. This dashboard allows you to measure and keep track of your weight as well as your body fat mass. 4 AAA batteries keep the scale powered for several months at a time depending on use. With its sleek and compact design, the Withings WS-30 Wireless Scale will adapt to any home scenario with ease.