4iiii Launches New Viiiiva Heart Rate Monitor With Superior Battery Life and Comfort

February 26, 2026

The new Viiiiva Heart Rate Monitor combines 540+ hour battery life with superior comfort, creating the 'ultimate power couple' when paired with PRECISION 3+ power meters.

COCHRANE, ALBERTA (February 26, 2026) /ENDURANCE SPORTSWIRE/ — 4iiii Innovations Inc., a leader in power-driven cycling performance, launches the newest Viiiiva Heart Rate Monitor, combining comfort, durability, and an exceptional 540+ hour battery life.

Designed for athletes of all abilities, the Viiiiva uses a high-sensitivity chest strap to capture the heart’s electrical activity with medical-grade precision. The IPX7 waterproof rating and lightweight, comfortable design ensure it can handle the elements and the most demanding sessions, while instant data transmission via ANT+ and Bluetooth® makes it compatible with any head unit or indoor training app.

The Viiiiva is also the perfect partner for the 4iiii PRECISION 3+ Powermeter, providing a complete picture of training and racing performance. While power measures external output in watts, heart rate tracks internal physiological response in beats per minute – together delivering a total understanding of effort, fitness and efficiency that neither metric can provide alone. This combination allows athletes to accurately track fitness gains, optimize recovery, perform every workout at the right intensity, and achieve precise training zone optimization that power or heart rate alone cannot deliver.

Phil White, President of 4iiii said: “Heart rate and power are extremely valuable metrics for any athlete, irrespective of their level, aims or ambitions. The Viiiiva completes that equation for athletes using our power meters, providing both the internal and external view of performance. It offers the same level of accuracy and durability that defines our power meters, so you can trust your data in any conditions, from racing in the rain to long sessions on the indoor trainer.”

Alex Dowsett, Former WorldTour Cyclist, Coach and 4iiii Ambassador said: “I tell every athlete I work with that power and heart rate aren’t competing metrics, they’re complementary. Power shows what you’re producing, heart rate reveals how your body is responding. The Viiiiva and PRECISION 3+ pairing gives you both with total reliability – which is essential whether you’re chasing marginal gains or building sustainable fitness. You can’t optimize what you can’t accurately measure.”

Product Features

The Viiiiva offers:

• 540+ hour battery life from a single CR2032 coin cell
• Comfortable, lightweight design at under 46g including battery
• ANT+ and Bluetooth compatibility for seamless indoor and outdoor use
• IPX7 water resistance engineered to handle the toughest training conditions
• Precision heart rate measurement from 30 to 240 BPM
• Adjustable chest strap fits chest sizes from 66-132cm (26-52″)

The Viiiiva Heart Rate Monitor is available now through 4iiii retail partners worldwide and at www.4iiii.com.

About 4iiii Innovations Inc.

Located at the foothills of the Canadian Rockies, we are a sports technology company committed to helping riders unlock their full potential through intuitive training tools. Our products include cycling power meters designed for both outdoor and indoor cycling and fitness markets. We strive to engineer and produce the most accurate and high-performing equipment—at a price point that makes advanced training accessible to every athlete. We take pride in supporting professionals riding 4iiii-equipped bikes who have claimed World Championships, Paris-Roubaix victories, and Tour de France stage wins and weekend warriors who consistently dominate their friends on Strava.

Media Contact:

Kate Allan
Compete PR
kate@competepr.com
+44 7754 072648