My son has Garmin VivoFit from 2015 which hasn't needed the batter changed (they weren't rechargable). He did switch to a Apple watch a couple of years ago, but

My son has Garmin VivoFit from 2015 which hasn't needed the batter changed (they weren't rechargable). He did switch to a Apple watch a couple of years ago, but it was between 2 and 3 years of every day usage. The claimed battery life was 1 year.