A:Answer Hello Topper, thank you for your message. In regards to your question, there is no a power on/off button. During pause, press and hold the OPTION/PWR/HOLD button. [POWER OFF] appears, your Walkman enters standby mode, and the screen turns off. For more information, check the Help Guide: https://docs.sony.com/release/NWZ-E383_E384_E385_guide_EN.pdf. -Oscar.