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ZDNET's key takeaways
- This perimenopause wearable is one of the first of its kind.
- Peri tracks perimenopausal symptoms.
- One of the first wearables designed for perimenopausal tracking.
Health wearables started as step counters and sleep trackers. Now the industry has its sights set on assisting people during an often-overlooked biological period: perimenopause.
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Peri, one of the first wearables designed for monitoring perimenopausal symptoms, is on display at CES 2026. Unlike general health wearables, the $449 device, which is now available to preorder, is chiefly designed for those experiencing perimenopause, the transitional period before menopause that typically lasts anywhere between three and 12 years.
Nonintrusive device
The device looks similar to a continuous glucose monitor (though Peri's sensor is nonintrusive, it attaches near the stomach, and there are no needles involved). It tracks perimenopause signals and captures data like body temperature, sleep, and cycle information, according to Peri's website. At CES, I saw that Peri is similarly sized – if not a little bigger – than your typical CGM and is less flexible in build.
The device is packaged with four sensors: PPG for blood flow, accelerometer for movement, EDA for measuring skin electricity, and a temperature sensor. These sensors, paired with Peri's custom algorithm, can detect and monitor perimenopausal symptoms, like hot flashes, night sweats, anxiety, and sleep pattern changes.
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“Perimenopause is treated like a mystery or an inevitability that women simply have to ‘power through.' We reject this. Women deserve real data, validation, and support during this profoundly overlooked stage of life,” said Heidi Davis, CEO and co-founder of IdentifyHer, the company behind Peri, in a press release.
Records biomarkers
Users attach the device under their breast, where it records biomarkers for around seven to 10 days before requiring a recharge. Peri says it aims to address common perimenopausal challenges like hot flashes, sleep disruptions, night sweats, and more through its biosensor and AI-powered analytics. Their custom algorithm doesn't simply detect a hot flash from a change in temperature, rather it's using a mix of data metrics to accurately predict and record these symptoms.
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Symptoms are logged in context with a user's menstrual cycle to examine their connections and track changes over time. They can also document hormone therapy treatment journeys and see how their treatment is impacting other aspects of their perimenopausal experience.
On the home page, users can see their sleep timing, anxiety score, activity level, and cycle information. There's also a tab for daily, weekly, and longitudinal insights, alongside a journal feature for recording moods.
The device was born out of a gap in symptom data for perimenopause in the first place. Poor diagnostics and a lack of clinician training leave those experiencing this period underserved in their condition, IdentifyHer's founders say in the press release.
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“Until now, managing perimenopause has depended on self-reporting, an approach that can be inconsistent, subjective, and difficult to track over time,” said Donal O'Gorman, IdentifyHer's COO and co-founder.
CES honoree
The device was a 2025 CES Innovation Award honoree in digital health. Following November preorders, Peri is set to launch in December.
