This detects electrodermal activity, which is small changes in your skin's sweat levels that might suggest you're under stress. Two features worth particularly pointing out are the watch's compatibility with the Fitbit ECG (Electrocardiogram) app, meaning users can assess their own hearts for any irregularities and speak to their doctor if they have concerns, and the on-wrist EDA Scan app. SmartTrack, which automatically tracks your workout.The Fitbit Charge 5 has an impressive range of features, justifying the higher price. What features does the Fitbit Charge 5 have? There was only one week where I found it didn't last for a full week but in this case, I was manually tracking workouts and so using the on-board GPS for several hours at a time without a break. Once it's charged though, the tracker does tend to last for the full seven days even when enabling GPS features which tend to reduce battery life relatively quickly. This isn't the case with the Charge 5, you have to leave it alone to charge for the full two hours before you can use it. Other models insist on a similar charging time - apart from the Fitbit Versa 3 which boasts an impressive 12 minute charging time - but you can use them before this two hour mark for a lower battery level. The Charge 5 needs to be plugged in and charged, using the simple USB cable system, for two whole hours.

(Image credit: Grace Walsh/Future) Fitbit Charge 5: Battery and chargingĭespite being one of the brand's newer fitness trackers, the battery life and charging system is a little dated.

Fitbit charge 5 review