The band you change into. Smooth polyurethane with the grain and finish of leather, closed with a stainless steel buckle, so the Fitbit Air reads as a slim bracelet rather than a piece of gym kit. It is the difference between wearing a fitness tracker to dinner and simply wearing something on your wrist.

Key features

• Polyurethane with a fine leather grain, in neutral tones that sit well with work and evening wear
• Stainless steel buckle
• One size, adjusted at the buckle, covering the adult wrist range
• Handles sweat and humidity far better than genuine leather, which matters on a tracker worn continuously
• Slim profile that slides under a shirt cuff without catching
• Tool free fitting. The tracker lifts out of your current band and presses straight into this one
• Available in a broader colour range than the official bands

Swapping the band over

Take hold of the band on both sides of the tracker and press down firmly on its face until it releases from the cradle. Line the tracker up against the alignment marks on the new band and push until it clicks. Check it by tugging gently. A properly seated tracker will not move at all.

Position it on the top of the wrist, just behind the wrist bone, snug enough that it does not slide but with room to slip a finger underneath. The Air reads heart rate through the back of the tracker, so a band worn too loose will cost you accuracy whatever it is made of.

Compatibility

• Google Fitbit Air

The Air uses a moulded cradle that the tracker clips into, rather than lugs and pins. Bands built for the Charge, Inspire, Luxe, Versa or Sense will not fit it, and Air bands will not fit those. Our Fitbit band compatibility guide sets out what crosses over across the Fitbit range.