Hold down the button (1) for 3 seconds.
You will hear the shutdown sound. Then, the Walkman and the lamp ( 2 ) will turn off.
Sony WS623 comes with LED indicator. If it is not fully charged and require charging - it will show orange light and when it is fully charged - it will show green light.
Sony NS-WS623 is quite light weight. It weighs just about 32 grams.
No. It does not have.
No. Sony WS623 comes with non-removable battery.