A power meter capable of valorizing every watt expressed. The union of intents between Miche e SRM and the sharing of their respective skills has given birth Attiva, a new power meterA product that uses the latest technologies in mechanical and electronic fields to put them at the service of the user, from the track to the road. Among its advantages is a tangible precision given by SRM's experience combined with the reliability of the components offered by Miche.


Accurate and flexible
Attiva is a product at the top of its category both for the accuracy of data collection, a feature that has made it the reference power meter used by professional athletes, both for the flexibility of configuration and for the compatibility with the various frame models. The power expressed by the athlete is detected with a accuracy of +/-1% errorThe measured values are transmitted to the control unit using the standard protocol. ANT +, which makes the system compatible with most cycle computers on the market.
This power meter has a treated steel pin and is compatible with any 24mm diameter bottom bracketUsing the Miche BB 86 series adapter movements it is possible to mount it on frames with a BB 30 standard bottom bracket shell.




Exhaustive compatibility
The power meter is proposed in various combinations of chainrings: 34-50, 36-52, 39-53. Specifically, these are Miche UTG 6800 series models made of 7075 aluminum and available in a wide range of options. The chainrings can be easily swapped based on the user's choices, offering further customization options. selecting from the Miche catalog among the various tooth sizes available. If you decide to configure the meter with other sizes available in the catalog it will not be necessary to carry out any corrective calibration of the power meter, an option that guarantees maximum flexibility of use of the instrument while always guaranteeing the maximum accuracy of the data detected.
With regard to the large crown It is available in sizes 42/44/46/48/50/52/53 while the small It is available in sizes 34/36/38/39/42. It is compatible with 10 and 11 speed drivetrains. Shimano e SramThe forged aluminum cranksets are also available in different lengths for maximum product customization. The available options are: 160 mm, 165 mm, 170 mm, 172,5 mm, and 175 mm.




Battery and weight
La battery of the Attiva is another of the strong points of this device. In particular it is of the type lithium, rechargeable via the USB cable provided. The duration of a single charge is around 100 hours of use and the charge level can be consulted on the control unit if it provides this function.
Il weight of the Attiva power meter in 34-50 configuration with 170 mm crank is 945 grams. The product is covered by a warranty 3 years supplied directly by SRM assistance centers for the electronic part and by Miche for the mechanical part.