The Withings Pulse O2 is a new product, but really it updates an old one: it's last year's Pulse fitness tracker and heart rate monitor plus a wristband accessory and new firmware.

Photo by: Sarah Tew/CNET

A new vertical-display clock with pedometer status makes the Pulse O2's band easier to use.

Photo by: Sarah Tew/CNET

The other sub-menus are all still horizontal, though.

Photo by: Sarah Tew/CNET

The Pulse O2 counts steps taken, active movement, elevation, estimated calories, and distance traveled. It also tracks sleep and measures heart rate.

Photo by: Sarah Tew/CNET

A red LED on the back measures stationary heart rate, and also measures blood oxygen percentage.

Photo by: Sarah Tew/CNET

The O2 percentage reading is a feature that older Pulse trackers can get with a free firmware update.

Photo by: Sarah Tew/CNET

The Pulse O2 charges via Micro-USB. Convenient, but keep it away from water.

Photo by: Sarah Tew/CNET

The Pulse is small out of its band.

Photo by: Sarah Tew/CNET

The button on top changes displays and syncs via Bluetooth. It works with Android and iOS.

Photo by: Sarah Tew/CNET

An included clip lets you use the Pulse away from your wrist, too.

Photo by: Sarah Tew/CNET

What you get in the box for $119: a band, a clip, the Pulse, and a charge cable.

Photo by: Sarah Tew/CNET

Additional band designs show that you can swap the band with a regular watchband.

Photo by: Sarah Tew/CNET

Withings redesigned its Health Mate app with a new layout. It's still as good as ever, but lacks social features.

Photo by: Sarah Tew/CNET

Syncing's easy to do, but takes a few seconds.

Photo by: Sarah Tew/CNET

Daily goal challenges don't sync with social networks, unfortunately.

Photo by: Sarah Tew/CNET

Health reminders are new, and Health Mate also acts as a hub for Withings scale and blood pressure monitor readings.

Photo by: Sarah Tew/CNET

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