Fixture data. The watches, makers, studies, shops and figures on this page are invented for testing. None of it is a real finding, so please don't rely on it or try to buy anything.

TechSussd

Fixture Maker A

Fixture Watch 3

Model number FXA-3

What the published evidence says about this watch, metric by metric. Every accuracy, compatibility and specification fact on a device page links to its source and shows its date. How we grade it.

Accuracy evidence

  • Heart rate at rest

    Unvalidated

    No published test we can use yet. That's not proof it's poor, just no evidence either way.

  • Heart rate in steady exercise

    Unvalidated

    No published test we can use yet. That's not proof it's poor, just no evidence either way.

  • Heart rate in interval exercise

    Unvalidated

    No published test we can use yet. That's not proof it's poor, just no evidence either way.

  • Step count

    Unvalidated

    No published test we can use yet. That's not proof it's poor, just no evidence either way.

  • Energy expenditure

    Limited

    1. Measured in steady exercise in 15 people, against a reference of indirect calorimetry: error of 18% (mean absolute percentage error). Meets our threshold.

      Against indirect calorimetry, Fixture Watch 3 estimated energy expenditure with a mean absolute percentage error of 18%.

      Study grade
      B · Peer-reviewed
      Funding
      Independent funding.
      Read
      Retraction check

  • Sleep duration

    Unvalidated

    No published test we can use yet. That's not proof it's poor, just no evidence either way.

  • Sleep staging

    Limited

    1. Measured during sleep in 18 people, against a reference of polysomnography: agreement on stages of kappa 0.55. Misses our threshold.

      Fixture Watch 3 agreed with polysomnography on sleep stages with a Cohen's kappa of 0.55 in 18 adults.

      Study grade
      C · Preprint, not peer-reviewed
      Funding
      Funding not stated.
      Read
      Retraction check

  • VO2max estimate

    Unvalidated

    No published test we can use yet. That's not proof it's poor, just no evidence either way.

  • GPS distance and pace

    Unvalidated

    No published test we can use yet. That's not proof it's poor, just no evidence either way.

Works with your phone?

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Specification: claimed and measured

Where to buy

A price we checked more than 6 hours ago is shown as last seen, not as current. Prices are the delivered total where the retailer tells us delivery; otherwise we send you to see the price there.

  • Last seen at £199.99 at Fixture Retailer One on . Not a current price.