Rotor Inpower DM MTB CranksetThe Inpower is a direct mountable MTB crankset which provides precise and comprehensive data to improve your pedal stroke performance. Whether you're training, competing or trying to beat personal goals, this state-of-the-art component combines all the tools you need to take your riding to the next level. Powered via standard AA battery and lasting up to 300 hours, all of its electronics are housed in a sealed water-proof axle for centred rotational weight and maximum device protection.Bluetooth and ANT+ Smart CranksetFully up to date with the latest software technologies including Bluetooth Smart and ANT+, you'll be able to export your data for training analysis with various programmes such as TrainingPeaks.com. What's most impressive is your pedalling power is measured via two sets of opposing gauges in its left leg axle for accurate data metrics. You will be able to measure your own power output, cadence, torque effectiveness and pedal smoothness while also accessing real-time performance rich data.Features: Material: 6082/7075 Aluminum Alloy Intended Use: MTB Bottom Bracket Compatibility: BB30 / Pressfit 30 / BSA / BB89 / BB92 Spindle Size: 30mm Q Factor: 169mm boost Chainline: 52mm boost Weight: 544g (approx)Buy Rotor Components from Chain Reaction Cycles, the World's Largest Online Bike Store.