The 4iiii Viiiiva is a precision heart rate monitor that captures accurate physiological data to optimize athletic performance and recovery. It features over 540 hours of battery life, IPX7 waterproofing, and ANT+ and Bluetooth connectivity for use with training devices and apps.
AI named 4iiii Viiiiva from February 2026 to August 2026.
Brand page for 4iiii-com-2