The ULTEGRA FC-R8100-P power meter crank offers the full range of functions and the same precision as its DURA-ACE counterpart, but at a more attractive price. Training under scientific conditions requires precise measurements, as well as user-friendliness. The new ULTEGRA R8100 power meter crank excels in both areas. The dual-sided measurement accuracy is within 1.5%, and the zero point calibration can be performed quickly and easily. Perhaps most importantly, it features a long battery life, simple recharging, and ANT+ and Bluetooth®LE connectivity, allowing training data to be recorded and utilized as easily as never before. 1 x Power meter crankset Shimano Dura-Ace FC-R8100-P 1 x Crank bolt Shimano 1 x Charging cable Shimano EW-EC300, 1.5 m 1 x Mounting ring for left crank arm 1 x Magnet 1 x Magnet cover black 1 x Magnet cover white 2 x Double-sided tape 1 x Crank tool Shimano TL-FC40 for left crank arm 1 x Cover cap for left crank arm 1 x Positioning tool for magnet