I just recently bought the Forerunber 235 because it was on sale and I like the size of the watch face and this watch has features which are an upgrade from my Forerunner 25, which was so reliable , accurate and easy to understand . I love to count my walking steps and do dance aerobics. At 66 years old, I like to monitor/record the amount of sleep I am getting. After one 24 hour period, my watch needs to be charged, even on days when I have not exercised more than one hour.