Shimano Ultegra R8100-P 12sp crankset incl. powermeter, excl. chainrings

The Ultegra FC-R8100-P power meter brings everything a data-driven cyclist could want. Its integrated, waterproof design brings all-weather reliability while delivering accurate information including left/right balance. A rechargeable Li-ion battery is user-friendly and Bluetooth®LE and ANT+ connectivity ensure easy setup.
 

Specs:

• Integrated, waterproof, and rechargeable Li-ion battery
• Up to 300+ hours of ride time * Depending on ANT+/Bluetooth®LE settings
• Accurate data collection
  
  • < 2% strain gage accuracy throughout the entire calibration range * Depending on ANT+/Bluetooth®LE settings
• Proprietary strain gauge
• Possible to start quickly
  
  • Simple zero offset calibration with switch on transmitter
• Active temperature compensation
  
  • Software automatically compensates for temperature changes
• The provision of new force vector data makes it the optimal training tool to analyze and improve pedal stroke efficiency
• With Shimano Connect Lab, you can analyze and visualize your training and power data
• Hollowtech II
• 2x12 speed
   

Note!
Comes without chainrings so only the crank arms with powermeter