The90 Gem UV-Tracking Necklace Offers Data-Driven Insights on Sun Exposure Risks
As The Verge reports, a new wearable device called Gem by The90 aims to provide users with a granular understanding of sunlight exposure. The titanium pendant tracks UVA and UVB radiation separately, offering a more personalized look at how environmental factors and skin profiles impact everything from vitamin D production to skin aging risks.
Context from Industry Pulse
The introduction of the Gem by The90 follows a broader trend of integrating health monitoring into everyday jewelry. Unlike traditional fitness trackers that focus on activity levels, this device targets environmental exposure, specifically distinguishing between UVA and UVB rays. The Verge highlights that many users, particularly those with higher melanin content, may underestimate their UV exposure or overestimate the protection provided by shade. By offering metrics like the Skin Aging Zone and a Sun Score, the device attempts to quantify the long-term impacts of sunlight. However, the reliance on app-based background processing and fluctuating predictive countdowns suggests that consumer-grade environmental sensors still face challenges in providing stable, medical-grade diagnostics.
"UV radiation wasn’t repelled by this patio umbrella, and it’s hard to ever be fully protected because radiation can be reflected or scattered by objects in the environment."
The90 has introduced a wearable sensor designed to bridge the gap between aesthetic sun protection and medical awareness. Priced at 249 dollars, the device utilizes a titanium pendant to monitor UVA and UVB radiation in real-time. According to The Verge, the sensor distinguishes between the two types of radiation, noting that while UVB is linked to vitamin D production and sunburns, UVA contributes to premature aging even when no visible burn occurs.
Functionality relies heavily on a companion mobile app that creates a Sun Score by balancing the benefits of light exposure against potential risks. Users can establish a skin profile by inputting data regarding skin type, sensitivities, and sunscreen use. The Verge notes that the app provides estimations for circadian light benefits, nitric oxide levels, and a personalized sunburn countdown, though these remain predictions rather than direct physiological measurements.
Practical testing revealed that environmental factors like patio umbrellas or fans do not always provide complete protection from reflected or scattered radiation. The Verge reports that the device successfully alerted a user to high UV levels during an outdoor event, which later prompted a medical investigation into how specific medications can increase heat sensitivity. This highlights the device’s potential to serve as a preventative tool rather than just a cosmetic accessory.
Despite the aesthetic appeal of the circular pendant, the technology has technical limitations. The app must remain active in the background on smartphones to store data, as the sensor itself does not hold measurements. Furthermore, some users observed significant fluctuations in the vitamin D and sunburn countdowns when UVB intensity shifted rapidly. The90 plans to expand the hardware line next year with new attachment options including a hat clip and bag tag.
The Industry Pulse Bottom Line
The Gem represents a shift toward specialized environmental wearables. While it effectively raises awareness about hidden UV risks, its dependence on continuous smartphone connectivity and predictive algorithms limits its utility as a definitive health diagnostic tool.