I received the 4 as a gift last year. I was very thankful and liked it a lot, but the ONE feature I wish it had was "always on". Well, here we are and I now own the Watch 5 with always on. I love it! And it has great battery life. I still have 76% after 8 hours. I sold the 4, so I'm not out the full price for the new 5. Well worth it!