WiThings Pulse O2

Good battery life ; Useful run detection mode ; Insightful sleep data

Screen is difficult in bright sunlight ; Some inaccurate heart rate and run data ; Cheap-looking watch straps

Speaking to Withings and doing some research a percentage score of 95-100% is considered a good reading while anything lower is an indicator that you are probably not in the greatest shape. Staying fit helps maintain the right oxygen levels so you are...

Long battery life. Includes both wristband and clip. Measures steps, distance, calories burned, elevation, sleep, heart rate, and blood-oxygen level.

Requires mobile device; not compatible with Windows or Mac. Heart rate readings not continuous and inconsistent in testing. Difficult to use during activity. Data displays could be improved.

Perhaps more to the point, the Withings Pulse O2's heart rate monitor isn't a continuous heart rate monitor, so it does you no good whatsoever while working out. Compared with the Basis Carbon Steel Edition, which reads your heart rate all day and all...

Collects a ton of information ; Automatically tracks runs ; Helpful reminders ; App connects to third-party services

Touchscreen is sluggish ; Heart rate reader is finicky ; No low-battery warning ; Requires a lot of work

You've got all the numbers. Now what?

Pulse monitoring ; Easy Bluetooth syncing ; Good battery life

You can’t wear it in the shower ; Screen struggles in bright light ; Sleep mode has to be manually activated

With pulse monitoring and bags of style, the businesslike Pulse O2 is great value but high maintenance.

Excellent pedometer, excellent app, affordably priced.

Can’t read your heart rate with the band on; screen is not always on, and terrible in bright daylight; not water-resistant.

A new wristband and new firmware improve the Pulse and make it a true fitness band, but it's not a big leap forward over last year.

It is 4x2x.8cm and can be worn either on a belt clamp or a watch strap, both are provided. This device shows nothing unless you press the one button which is either bottom right or top left dependant on how you wear it on your wrist. It only fits into...