By smart watch I take it you mean one of those gas guzzling things that doesn't quite manage to do anything particularly useful that the phone you probably carry as well does rather better 8)
I strapped a Citizen Eco watch on my wrist about 12 years ago. It charges itself via four solar panels behind the hands - they simply look black. The only pains are I have to do BST/GMT adjustments and worst of all: "30 days hath September ..." Oh, and its not water proof. The time keeping is good enough.
I am surrounded by more ntp daemons than you can shake a stick at if I need millisecond accuracy, eg this laptop:
$ ntpq -p
remote refid st t when poll reach delay offset jitter
==============================================================================
+server1.webster 193.190.230.65 2 u 237 256 377 15.144 0.081 0.713
*85.199.214.100 .GPS. 1 u 11 64 377 12.541 -1.346 0.698
-ntp3.ds.network 203.135.184.123 2 u 196 256 377 334.847 4.998 23.715
+babbage.betadom 80.94.65.10 2 u 177 256 377 10.992 -0.505 1.023
Tut! one of the servers I'm using is showing an offset of nearly 5ms but it's OK: that system has a - against it.
In a few days time I will be firing up a new member for the general ntp pool(s). I've been using it for many years and its time to give back. I'll be following this guide: https://www.ntpsec.org/white-papers/stratum-1-microserver-ho... Depending on how that goes, I may be able to fire up quite a lot of them scattered across the UK. Some internet links I look after are only for failover and are largely idle most of the time.
> doesn't quite manage to do anything particularly useful that the phone you probably carry as well does rather better
I don't have a full fledged smartwatch, but a running watch with some smart features. Its killer feature is not to pretend to be a phone. It's much simpler than that. Its receiving (only high priority) notifications on my wrist. Incredibly convenient when I can't pick up my phone.
Edit: apparently my phone strongly prefers "it's" over "its".
It's also super handy to just put on your running gear and start running... I don't want a phone in my hand or in my gym shorts when running. I just need the watch to track my movements and when I get back home, I can sync it up to my smartphone, who will take the data, upload it to some running website and analyze everything (including heart rate data).
That's still one of the best use cases to justify buying a smart watch at the moment
I recently purchased an Eco that has an atomic clock receiver to self correct every night. Auto charging and auto setting is very helpful. Even the dates are always right.
It's a beautiful thing and I've gotten so used to having perfect time on my wrist that I actually feel strange when I don't have it.
I strapped a Citizen Eco watch on my wrist about 12 years ago. It charges itself via four solar panels behind the hands - they simply look black. The only pains are I have to do BST/GMT adjustments and worst of all: "30 days hath September ..." Oh, and its not water proof. The time keeping is good enough.
I am surrounded by more ntp daemons than you can shake a stick at if I need millisecond accuracy, eg this laptop:
$ ntpq -p remote refid st t when poll reach delay offset jitter ============================================================================== +server1.webster 193.190.230.65 2 u 237 256 377 15.144 0.081 0.713 *85.199.214.100 .GPS. 1 u 11 64 377 12.541 -1.346 0.698 -ntp3.ds.network 203.135.184.123 2 u 196 256 377 334.847 4.998 23.715 +babbage.betadom 80.94.65.10 2 u 177 256 377 10.992 -0.505 1.023
Tut! one of the servers I'm using is showing an offset of nearly 5ms but it's OK: that system has a - against it.
In a few days time I will be firing up a new member for the general ntp pool(s). I've been using it for many years and its time to give back. I'll be following this guide: https://www.ntpsec.org/white-papers/stratum-1-microserver-ho... Depending on how that goes, I may be able to fire up quite a lot of them scattered across the UK. Some internet links I look after are only for failover and are largely idle most of the time.