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Pair the Viiiiva with a 4iiii power meter to seamlessly link external output (Watts) and internal response (bpm)
With 540+ hours of battery life and an IPX7 waterproof rating
and torque effectiveness
it features Apple Find My technology
4iiii PRECISION 3+ Left-Side Powermeter - Ride Ready Compatible Left Crank:Shimano - Ultegra FC-R8000 172.5mm Pair the Viiiiva with aThe 4iiii PRECISION 3+ Powermeter is the ultimate combination of accuracy, durability, and lightweight design. Whether you are a Tour de France pro, a Mountain Bike World Champion, Ironman triathlete, a Zwift racer, or a cyclist simply looking to add the structure of data to your training, this crank based power meter provides the consistent data you need to unlock your potential. Engineered to be the best affordable power meter on the market, the
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