On review here is Fitbit’s ChargeHR activity tracker, one of its most popular models which provides heart rate monitoring in addition to steps taken, calories burnt and eyes shut. Designed for “active fitness”, it’s aimed at those people who take control of their fitness level rather than simply walking 10,000 steps. That’s me then. On a good day. Let’s take a look.
You can watch the unboxing and setup video above, though what you don’t see is that I completely destroyed the box getting the tracker and accessories out because you’re supposed to open the bottom not the top. Doh! Fitbit, you need “Open other end” printed on the top. Inside the box is the Fitbit ChargeHR, a Bluetooth dongle, a charging cable and small instruction booklet that directs you to the Fitbit site for more information. The dongle is only required for syncing to a PC.
The ChargeHR is available in six colours; black, blue, teal, plum, tangerine and pink. As you’ll see from the pictures, I had the teal one, which was fine when I was exercising but I did feel a little self-conscious wearing it with a suit at work. Unlike the Alta and Flex range, 
there’s no switching round of bands, so buy a colour you’re comfortable with. The ChargeHR band comes in three sizes, small, large and extra large, though the XL size can only be bought through fitbit.com. Small is 13.7 cm–15.7 cm, large is 15.7 cm–19.3 cm and extra-large is19.3 cm–22.1 cm. Fitbit provide a handy sizing chart here. The ChargeHR has a proper watch-style buckle for the band, rather than the push through style of the Flex.
Getting started is easy. Charge the ChargeHR with the supplied cable, install the app on a smartphone or tablet, register if you aren’t already with Fitbit, follow the pairing instructions and job done. Now all you have to do is some exercise!
The ChargeHR is a extremely easy to use as there’s only one button which is situated on the left side of the unit. Pressing the button cycles through time, steps, heart rate, distance, calories, stories climbed and next alarm. For each statistics, there’s a little graphic followed by the number – footprints for steps, a heart for pulse and so on.
The main differentiator of the ChargeHR is the heart rate tracking. I don’t know much about the science but it appears to use a couple of greenish LEDs on the back of device to measure the pulse. The ChargeHR measures the pulse every second under normal circumstances, but when it detects exercise, it ups the data rate for real-time information so you can keep your pulse in the zone.
The charging port is visible on the back in the picture. Charging typically takes less than hour for a couple of days wear.
Clever as the ChargeHR is, it’s only once you start looking at the data generated that you really start to get benefit from the tracker. The Fitbit app can provide graphs and charts for most metrics. Here are a few showing steps, resting heart rate and sleep. I didn’t wear the ChargeHR every night, hence why there’s some missing data. Activity can be reviewed, giving heart rate zones – peak, cardio, fat burning – exercise duration and max heart rate. There’s lots of useful info.
If you’re using a PC rather than a smartphone or tablet, Fitbit provide a web-based portal that provides similar information and analysis. For the really serious fitness fans, $50 per annum gets Premium privileges and extra analysis (which I didn’t investigate).
The ChargeHR does vibrating alarms too which is very handy if you need to get up without your bedside alarm waking your significant other. The alarm is set via the app and then sync’d to the tracker. I like this, though it’s not exclusive to the ChargeHR.
As expected in this day and age, there’s a social element too. You can add friends who also have Fitbits (of whatever variety) and see a leaderboard of steps taken each week. You can also earn badges for steps taken per day and lifetime achievements – I’ve a Nile badge for 6,649 lifetime kilometres.
I’ve had the ChargeHR for a couple of weeks now and I’ve been wearing it as much as I can. Sometimes I have to wear my Fitbit Zip on my belt when a teal bracelet wouldn’t be appropriate. Fortunately the Fitbit app (at least on Android) allows cross-syncing, so if you do 1,000 steps on one device and 1,000 on another, both will show 2,000 after a sync (or two). I like that feature as it lets me wear the Fitbit that suits my day.
Overall, I feel Fitbit have slightly stolen my thunder here, as the ChargeHR is being phased out and replaced by the Charge 2, but this could be an opportunity to get an excellent tracker for less money. Although officially priced at a penny under GB£120, it’s widely available for £89.99, even in shops such as PC World. The Charge 2 is currently £129.99, so there’s an effective saving of £40.