4iiii Precision 2.0 Dura Ace R9100 Power Meter Crank Arm - Non-drive - 172.5mm

An excellent addition to your riding setup, this innovative power meter crank takes note of every pedal stroke to relay your power and cadence information to your compatible device, allowing you to make every ride the best it can be.

As the name suggests, this excellent device is the most precise way to keep on top of your riding outputs. This left-arm model is compatible with Shimano Dura-Ace FC-R9100 cranksets, delivering real-time cadence and power data straight to your onboard computer or smartphone via ANT+ and Bluetooth. Weighing only an additional 8g over a regular crank arm, it gives output readings to within +/-1% accuracy, letting you make the appropriate adjustments in an instant.
 
IPX7 waterproof rated and equipped with 100+ hours of battery life, the Precision is an excellent way to keep yourself riding at your very best.

Specification:

• Accuracy: Measures to within +/-1%
  
• Crankset Compatibility: Shimano Dura-Ace FC-R9100
  
• Wireless Connectivity: ANT+, Bluetooth
  
• Dimensions: 37.7x27.6x7.5mm
  
• Power Range: 0-4000w
  
• Cadence Range: 30-150rpm
  
• Waterproof Rating: IPX7, IPX5
  
• Battery: CR2032 Lithium Ion coin cell, 100+ hours
  
• Module Weight: 8g
  
• Bluetooth Enabled: Yes
  
• Ant+ Compatible: Yes