Upgrade from S7 to S9?

Egika

@Kai-Liu
The S9 has no HR measurement issue.
It is more a physical limitation.
Firstly, wrist heart rate measurement is limited in general an influenced by various factors (skin color, blood pressure, temperature, wearing style, wrist shape, etc.).
The S9 has one disadvantage though: it’s rather heavy. That makes it more prone to bouncing around on the wrist and intruding measurement errors.
S7 is better in this respect, but in general for accurate data, you should get a chest strap anyway.
Additional benefit: watch can be worn over clothing or attached to a bike handlebar, plus you get r-r data, which records heart rate variability and enables FirstBeat to do some magic calculations like deriving respiration rate from HR data etc.

Battery wise the S9 is king. Plus for running you get the awesome battery modes that use additional sensor data to get accurate tracks even at low GPS chip power.

Brad_Olwin

@Kai-Liu I have seen your posts on the S7. I noticed in one post that you have Appfour apps installed. These impact my battery life and may impact yours. I would like to pursue why you only get 5h as I can get more than that. I have an S9 as well so I can comment on both watches. How long do you need your battery to last? What activity would you like to have long battery life? Let’s start there.

Kai Liu

Thanks! @Egika S9 baro’s weight is 2.68oz while S7 is 2.47oz that is no much difference so I think S9 is a good alternative of S7. I bought S7 for wear os feature, but I find that I don’t use wear os feature at all. As you mentioned HR measurement is not an issue, the only concern for me is that S9 is already a watch 2 years old, it seems stupid to buy it for now while new version may come out in half year, maybe I should bear with S7 a little bit longer.

@Brad_Olwin Thank you! I do deleted all 3rd party apps later except “sleep as android” but I don’t see it on battery stats. I just factory reseted the watch today I hope that it can become better. I do remember when I just bought the watch, it could last from 9am to 4pm when I was skiing, I hope reset it brings it back to original state. I usually do hiking in the summer and ski in the winter, the activity can range from 5 hours to 10 hours (backpacking long hike), so 5 hours is definitely not enough for me.

lexterm77

@Egika said in Upgrade from S7 to S9?:

@Kai-Liu
The S9 has no HR measurement issue.
It is more a physical limitation.
Firstly, wrist heart rate measurement is limited in general an influenced by various factors (skin color, blood pressure, temperature, wearing style, wrist shape, etc.).
The S9 has one disadvantage though: it’s rather heavy. That makes it more prone to bouncing around on the wrist and intruding measurement errors.
S7 is better in this respect, but in general for accurate data, you should get a chest strap anyway.
Additional benefit: watch can be worn over clothing or attached to a bike handlebar, plus you get r-r data, which records heart rate variability and enables FirstBeat to do some magic calculations like deriving respiration rate from HR data etc.

Battery wise the S9 is king. Plus for running you get the awesome battery modes that use additional sensor data to get accurate tracks even at low GPS chip power.

Respiration rate was amazing feature of MC, it accurately recorded me gulping up bottle of water without drawing a breath where is it in SA?

Brad_Olwin

@Kai-Liu i think 10h is about as long as you will get with the S7 and that is quite good. It sounds for your needs you may require more battery.

Kai Liu

@lexterm77 what is MC?

tomahawk5000

@Kai-Liu MovesCount probably

lexterm77

@Kai-Liu said in Upgrade from S7 to S9?:

@lexterm77 what is MC?

Movescount.com used to be a website for analysis of activity for all Suunto devices back in the days of Ambits.
It had most features you have to pay for now via third party apps.

Brad_Olwin

@lexterm77 Except QuantifiedSelf is free and provides most of what MC used to.

zhang965

Hello,

You only heard of the HR issue?

Have you heard about the GPS issue…battery issue…strap issue…

tomahawk5000

@zhang965 I have S9B since Feb and didn’t have any of those

zhang965

@tomahawk5000 said in Upgrade from S7 to S9?:

@zhang965 I have S9B since Feb and didn’t have any of those

Hello,

Congratulations,You are a lucky guy!

Have you won any lottery in your life?

Bulkan

@zhang965 Did you have all those issues? Lottery winner!

zhang965

@Bulkan said in Upgrade from S7 to S9?:

@zhang965 Did you have all those issues? Lottery winner!

I’ve got the GPS issue, strap issue,

I accept all payment, will you pay me your lottery?

Bulkan

@zhang965 if you later pay a round to everyone maybe…

zhang965

@Bulkan said in Upgrade from S7 to S9?:

@zhang965 if you later pay a round to everyone maybe…

Sure of course, but you should pay me first so I can pay someone others.

Bulkan

@zhang965 I will try my best, let’s hope the bug of payment doesn’t show up.

@Kai-Liu it’s not an upgrade. It’s more of a lateral move. The S9 has a good battery life relative to the S7 sure, but the S9 has about a three day battery life in always on with daily activities.

Bulkan

Perfect description. Both watches are targeting different needs.

One is an smartwatch sport oriented.

The other is sport watch.

Kai Liu

But I really like S7 map, it has more information than the hiking project map on my phone and more accurate. S9 does not come with a map but only route, but I always diverge from my planned route depends on unanticipated situations (rain, hiking buddy tired, sunset, etc) so I need a map.