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.

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

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

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

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

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

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

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The Pulse is small out of its band.

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

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

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

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

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

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

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

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

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