Withings has launched the next version of its Pulse activity tracker, now called Pulse O2. The new device allows users to measure their blood oxygen levels, which help users understand the efficiency ...

There are currently plenty of fitness trackers available to monitor your daily activity, however if you are looking for something a little bit more refined and capable of monitoring your blood oxygen ...

Last week, Withings commercially launched Pulse, an activity tracker, which the company first announced at CES in January. The tracker is available for pre-order at $99.95 from the company's website.