Samsung has today unveiled its new Galaxy Watch5 Pro and claims it has an 80-hour battery life. Full story from the iMore Blog...
I would pass on this. I'm getting about 30-35 hours between charges on my Series 7.
Don’t really know what you have done to your Apple Watch 7 , but my Apple Watch 6 can do a 3 hour outdoor walk no problem.
Battery usually lasts a day and a half and I would wager that beats the new galaxy 5 if Samsung is using a Samsung fabricated cpu.
In fact with a Samsung fabricated cpu I would be shocked if it even got 24 hours. Probably why Samsung gives the Watch away with a new phone.