J-style X7 Ring with CALERA® Technology
Product Info
In November 2025, we announced an exciting partnership with J-style to launch a precision core body temperature monitoring ring powered by greenteg’s CALERA® technology. Blending sleek design with advanced sensors and AI, the non-invasive JC Ring enables continuous, day-and-night core temperature tracking in a lightweight, comfortable form.
This collaboration represents the next generation of wearable health insights, delivering accurate core temperature measurement during daily activities, sleep, and exercise.
Available for order in 2026. For more details, please download the specification sheet.
