Accueil › 🇺🇸 États-Unis › Technologie Former Fitbit executive launches UV-tracking necklace aimed at women 📅 12/06/2026 11:06 📰 techedition 👁️ 1 lectures 🌍 États-Unis 📂 Technologie The90 launches The Gem, a smart necklace that tracks UV exposure and provides personalised sun-safety guidance.