A:Answer To turn off your “WALKMAN”
Press and hold the OPTION/PWR OFF button "[Details]. [POWER OFF]" appears and your “WALKMAN” enters standby mode, and the screen turns off.
Your “WALKMAN” consumes battery power very slightly even when it is in standby mode as you have stated. While your “WALKMAN” is in standby mode, if there is no operation for about a day, it completely turns off automatically.
If you leave a song on pause, if there is no operation for about 10 minutes, your “WALKMAN” automatically enters standby mode, and the screen turns off. again if there is no operation for 1 day it will shut off completely.