weight. a new battery in the scale

I finally got a new battery for my scale.  It has been dead for six months.  Fumiko needed a battery for her device.  I ordered one for her and one for me.  Mine came.

Weight today.  I am wondering if I am more muscle or fat than before.  I read that men after 60 lose their muscle mass unless they exercise.  I exercise a lot.  How much is a lot?  I average 90 zone minutes a day.  I most always go 10000 steps a day and most days it is closer to 20000.  I think I am strong but it I don't have a way to objectively determine it.