4iiii Precision Shimano 105 R7000 175mm Left Side Power Meter Crank Arm

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How Does It Work A ride ready PRECISION pod is already preinstalled on a Shimano crank arm at the 4iii factory. Packaged into a durable lightweight design and compatible with ANT+ and Bluetooth Smart head units, PRECISION will help you train harder and smarter and delivers industry leading accuracy and reliability when you need it most. Gold Standard in Accuracy 4iiii powermeters have had their gold-standard +/- 1% accuracy independently verified by leading scientists at the Locomotion Lab at the University of Colorado. This lets you plan your training, pacing, and racing with confidence, knowing that your equipment is measuring your true power output. Dual-Channel Ant+ & Bluetooth Smart 4iiii powermeters communicate their measurements over both the widely-used ANT+ and Bluetooth Smart radio standards, letting you read and record your power numbers on an enormous catalogue of headunits, sportswatches, smartphones, and computers. 3D Power Measurement When you put force through your pedals or crank, it doesn't just bend the crank - it twists and flexes in all 3 dimensions. 4iiii's patented 3D power measurement system measures this multidimensional strain, so you can be confident that your unique pedal stroke is still measured accurately no matter your riding conditions.
Specifications • Weight 9 Grams • Left Side only Crank Arm • Data Accuracy +/- 1% • Battery Life 100+ riding hours on standard CR2032 coin cell battery • Communication ANT+ (BPWR Profile) and Bluetooth Smart (Cycling Power Service) • Waterproof Rating IPX7 (submergence to 1 meter)