The Campagnolo HPPM is the brands first power meter, with 16 sensors and a claimed accuracy of /- 1 per cent.HPPM stands for High Precision Power Measurement and the power meter is said to pursue the goal of providing the most precise data possible.The Camapgnolo HPPM costs $2,449 / 2,240, with UK pricing to be confirmed.Not what we expectedThe HPPM has been revealed after a period of speculation about a Campagnolo power meter. - CampagnoloWe first thought a Campagnolo power meter was in the works with the launch of Campagnolo Super Record WRL in 2023, where a cut-out was visible on the inside of the new groupsets crank arm.We then spotted a Campagnolo power meter in February when it was leaked on the Canyon website.At launch, the Campagnolo Record WRL crank arm had a cut-out we expected to house a power meter. - Oscar Huckle / Our MediaHowever, the Campagnolo HPPM power meter is not what we expected. Rather than being a crank-based power meter, the HPPM is a spider-based power meter, with its 16 sensors positioned in the spokes of the crankset.This also means the Campagnolo HPPM power meter has a different look. Gone is the smooth body of the Campagnolo SPW crankset and a more conventional two-part design is in its place.How does the Campagnolo HPPM power meter work?The power meter has 16 strain gauges and a gyroscope. - CampagnoloMany of the best power meters claim accuracy within /- 1 per cent and Campagnolo is keen to stress how its first power meter is this accurate too.The Campagnolo HPPM has 16 strain gauges with four in each quarter of the crankset.Campagnolo says the gauges produce multiple readings, which are combined using an algorithm to achieve the power meters readings.The company says the power meter employs a Wheatstone bridge design, an electrical circuit used to measure unknown electrical resistance and said to be more accurate than other circuits.The HPPMs accuracy is also due to a gyroscope providing live measurements and high-frequency data sampling.Angular velocity and torque signals are measured every five milliseconds. The frequency is 200 hertz for the clearest possible reading of the data, according to Campagnolo.4,000 wattsCampagnolo says the HPPM will provide power readings up to 4,000 watts. - CampagnoloThe Campagnolo HPPMs functionality extends beyond riding ability or even conditions.Campagnolo says the HPPM will measure power meter readings up to 4,000 watts.The operating temperature of the power meter also has a range of 80C, from -20C (-4F) to 60C (140F).Campagnolo says its first power meter has high data stability with internal temperature compensation.The brand also promises super fast charging, with the serviceable battery taking 3h 45min to reach full power.The battery charge lasts five weeks, assuming 500km per week at 20C, according to Campagnolo. The power meter uses the same magnetic charging port as Campagnolo Super Record WRL.New My Campy 3.0 companion appThe My Campy 3.0 app enables you to calibrate the HPPM and see live data readings. - CampagnoloCampagnolo has launched the new My Campy 3.0 app to support the HPPM power meter.The cycling app enables you to calibrate the system in a few steps and see live data from the power meter.The app shows the battery charge of all components in theCampagnolo ecosystem, such as the derailleurs and shifters, and the shift count of the cranks and cassette.The system uses Bluetooth and ANT to connect with a bicycle computer.Campagnolo HPPM range optionsThere are three crank-length options available. - CampagnoloThe Campagnolo HPPM range caters to a variety of riders.It is available with three chainring options: 29/45, 32/48 and 34/50.There are three crank-length options available, too, ranging from 170mm to 175mm.The crankset is hollow carbon with a titanium axle and Campagnolos Ultra-Smooth Bearings.Campagnolo says the HPPM power meter weighs 656g, with a 172.5mm crankset and the 29/45 chainrings.