If history is any guide as ALL Apple products have InvenSense gyros then we will see an integrated single 6 Axis from InvenSense. The Apple Watch must use a single 6 axis for everything to reduce power.
The only question is did Apple use InveSense GPS navigation Software?
Apple obviously has reduced GPS run time and rides the 6 Axis to reduce power consumption by up to 80% off time. This is what InveSense software specializes in and it has to be in the iWatch.
Will Apple do their own dead reconning algorithms or use InveSense SW?
Last time the prototype Gyro was published as InvenSense. That was a good guess based on the fact InvenSense is Apple's go to company for motion technologies. But it ended up being STM. That was because STM was first there in the original design.
Now the guess is "Likely an iteration of STMicroelectronics C451 gyroscope + accelerometer". Based on the fact STM was in on iWatch1. But the iWatch2 has diiferent requirements. This gyro must provide a navigation solution and turn off the power hungry GPS 80% of the time. InvenSense excells in this capability.
I would be highly surprised if InvenSense does not have the best 6 axpoThe real question in my mind is did Apple use InvenSense Software? If so better margins should be coming.
The 6 axis Accel/Gyro in the Apple Watch is Labeled "C 451". How does this tie it to STM? STM uses their ST letter logo and doesn't have a part "C" anything. How is it that an analyst named Blair at Rosenblat announced STM as the Apple Watch design winner two weeks ago?
At some point the winner needs to brag. No one is taking credit yet...
The Gyro is marked C451. How does anyone know that is STM?