I recently bought a Steel HR. It loses about 10% battery life per day. This isn't even close to the claim of up to 25 days. I might do connected gps tracking activities at most once per week, but it still loses 10% battery life with just normal daily use. Batteries tend to get worse over time. Am I going to have Apple Watch battery life of only 18 hrs soon? I bought this activity watch mostly because of the claimed battery life. Disappointed.