Graphic menu: One-touch Zen button for easy operation. Plug and Play: No software required; connects directly without leads or installation. Fashion style: Nano wear-resistant mirror finish, stylish and durable. INSTRUCTIONS FOR USE: Insert a Micro-SD card into the slot. Use the key lock function and press the Play button twice to switch the FM channel. Use the +/- buttons to increase or decrease volume. Press the forward button to skip to the next song or the reverse button to replay the current song. Press the center button to pause; press again to play. Battery Type: 1 x AAA Battery (not included). Material: ABS. Color: silver / black / blue. Package Contents: 1 x MP3 Player, 1 x Earphone (Note: Style may vary and is selected at random; specific styles cannot be requested). The package includes only the items listed above; other products are not included. Note: Lighting effects and display differences may cause slight variations in color between the image and the actual item. Measurement error allowance is +/- 1-3 cm.