After two nights with the ISM I thought I would provide some feedback.
- The ISM is super comfortable. I am wearing it on my right bicep and after putting the ISM on I hardly notice it is there. I was worried I would have issues wearing something on my arm to sleep but two nights in, all good.
- I am not having any of the problems that are being raised in the forums here. Training Readiness, HRV, etc. is all being recorded without issue.
- I am still figuring out the battery. First night I started at 98%. This morning battery was at 71%. I will continue to watch the battery usage. I have taken to turning the ISM inside out as has been recommended in other threads, to deal with battery life issues.
- I am running the latest firmware, v3.70. I had some issues with updating to the latest firmware. I ended up removing and then re-adding the ISM in Garmin Connect. Once I added the ISM a second time the firmware update was pushed out.
- The ISM is not showing in Garmin Express. Not sure why. I tried to add it and Garmin Express would not recognize the ISM. I saw in another thread I might need to enable USB storage for the ISM to be recognized. I still have to try this.
- My process for syncing the ISM is as follows: Remove Forerunner 265 at night. Just take it off and put on nightstand. Watch is NOT Bluetooth connected to my phone. Watch seems to shut down (no green lights flashing). Then put activate and put on the ISM. Go to sleep. In the AM, take the ISM off, take phone off airplane mode, ISM syncs, put on watch, turn on Bluetooth, watch syncs, review morning report. All data is present.
Overall I am happy with my purchase.