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Key takeaways 

• Luna launches the Luna Band at CES. 
• It's a hands-free health tracker that takes notes from Whoop. 
• Users log information without opening the Luna app.

Move over smartwatches, there's a new wearable coming for health tracking -- and you won't have to open an app to use it. Health technology company Luna introduced its Luna Band on Monday at CES in Las Vegas. 

The smart band, which tracks a standard set of health metrics, offers voice-led health guidance powered by Luna's AI engine, so wearers can record health information without opening the app. Recording health information hands-free might seem trivial, but manually logging every mood or tagging meal information in an app quickly gets monotonous, exhausting, and becomes a deterrent to consistent use and accurate data capture.

LifeOS, Luna's AI engine, is connected to Siri, so you can log your information, like if your poor sleep was because of a long workday, if you ate a heavy meal late at night, or if you've been going through a poor mental health week. The idea behind this is that, while health trackers can continuously track all your vitals and biomarkers, like heart rate, heart rate variability, body temperature, and respiration, it has a harder time logging and explaining why there are fluctuations and changes in these biomarkers without the help of human context. 

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"The Luna Band represents a new category of personal health technology focused not on displaying data, but on providing timely, actionable guidance," Luna writes in its press release. 

Screenless and hands-free

The band is screenless and delivers health information -- think biomarkers like sleep, activity, stress, nutrition, and moods -- through a user's earbuds or compatible device.

The band is hands-free, utilizing voice-led interactions without requiring the Luna app to be open. Luna's dynamic logging allows users to log meals, symptoms, and moods, as well as query the AI for health-related questions. 

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These days, more wearables are operating without the help of their compatible apps. Other examples of wearables going truly hands-free can be seen in two recently launched smart rings, Pebble's Index 01 and the Stream Ring . Each device is activated by pressing a button on the ring. Then, the ring begins recording the information a user is noting down in the device's respective app (without it being open). 

The band's sensing platform measures sleep and activity, as well as micro-recovery, circadian fluctuation, and stress signals. It's built with an optical sensor array and a high-fidelity, six-axis internal measurement unit. Luna says that the data capture's precision makes its daily health guidance, delivered through a user's earbuds or phone, more informed. 

LifeOS syncs with Apple Health, Google Fit, Clue, Kindbody, and other health apps. 

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Luna Band comes in four colors: hot red, orange, purple, and verdant. Thankfully, no subscription comes with the Luna Band. We do not yet know what the pricing and availability will be. 

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