The 4iiii Precision Gen 3+ Power Meter DuraAce 9200 172.5mm Left Crank is a high-performance tool designed for cyclists who demand precision and reliability. This power meter offers accurate power measurement within 1%, ensuring you have the data you need to optimize your training and performance. Its lightweight design, weighing only 9 grams, ensures it won’t add unnecessary weight to your bike. With compatibility for both ANT+ and Bluetooth, it seamlessly integrates with your existing cycling devices. The power meter is also water-resistant, making it suitable for all-weather conditions, and its easy installation on the left crank arm means you can get started quickly.