I've tested every Fitbit ever made, but this one is my favourite - now at its lowest-ever price before Black Friday

As woman&home's digital health editor, a keen runner, gym-goer, and long-time fan of the brand, I've tried and tested every Fitbit there's ever been - right back to the Fitbit Classic. But the Charge 6 quickly became my favourite after its release - and I've struggled to find one better ever since.

The Fitbit Charge 6 is one of the best Fitbits right now. It took the top spot in my eyes soon after its release thanks to the combined smartwatch and fitness tracker characteristics. It has advanced health, fitness, and sleep monitoring technologies and has a streamlined design that doesn't look out of place in the gym or at the office.

However, it's rarely included in the best Fitbit deals. The cheapest I've ever seen was on Amazon Prime Day earlier this year when it sold for £114 on average and reached a low of £103 on Amazon. Ahead of Black Friday though, I've spotted an even lower price tag on the Charge 6 in all three colourways.

Fitbit Fitbit Charge 6 in Black: was £139.99 now £99.99 at Argos

This colourway adds another discreet element to this fitness tracker, blending into the background as well as any smartwatch with the black strap and shiny black aluminium bezel.

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Fitbit Charge 6 in Coral / Champagne Gold: was £139.99 now £99.99 at Argos

This bright coral colourway is completely unique to the Charge 6 and makes for a bold accessory with its strap and rose gold casing.

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Fitbit Charge 6 in Porcelain / Silver: was £139.99 now £99.99 at Argos

Or you can keep it sleek with this classic porcelain colourway, complete with a silver aluminium bezel.

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While Argos is a top retailer for delivery times and reliability, the Fitbit Charge 6 is also on sale at other third-party retailers and direct from the Google Store with the same discount. You'll find it on:

• Amazon: Save on the Charge 6 at its lowest ever price
• Google Store: £40 off across all three colourways
• Currys: Save on the Charge 6 across the three colourways
• Selfridges: Shop with £40 off the Fitbit Charge 6

Why the Fitbit Charge 6 is my favourite

Not sure what the Fitbit Charge 6 is all about? Let me tell you! When recording a workout, you can navigate to your favourite activity with just a few swipes. When you're done, you'll get a full run-down of your progress on your wrist with further insights in the Fitbit app

I wear my Fitbit Charge 6 to bed to read my sleep habits. In the morning, I love seeing the hours I've slept and the amount of different sleep types (deep, light, and REM) I had. I can use these insights in the app to better understand how my rest influences my wellbeing throughout the day, with Body Battery scores in Fitbit Premium. Speaking of Fitbit Premium, you get six months free when you buy this Fitbit.

Unlike many Fitbit types, you can send and receive text messages on the Fitbit Charge 6, control music playing through your headphones from a connected phone at the swipe of a finger, and set alarms to help you manage your time. I've used the alarm's gentle on-wrist buzz to wake myself up in the morning before.

The design is slimline and discreet, bridging the gap between workout wear and your casual wardrobe. So, unlike many other fitness trackers - even the best Garmin watches - you won't feel like you've got a bulky fitness tracker on your wrist.

However, it's not for everyone, so it's worth weighing up the Fitbit Charge 6 vs Fitbit Versa 4 if you're not set on the Charge 6. The Fitbit Versa 4 has many of the same features and a larger, square-faced smartwatch design, though it is more expensive.