Size: 9 x 6 x 5 cm Material: maple wood MP3 music (auto play when cover is opened. Click the button to play next song) Chargable (via USB C). Cable not included but you can use mobile charger cable Can engrave photo/message at inner cover To engrave custom design at outer cover and other sides, there’ll be additional charge Note: includes 2GB SD card. We can help you to input max 5 songs. Please include youtube link to the songs in the Remarks column. If needed, you can input more songs by yourself.