This is the pink model of the Sony Walkman S Series "NW-S644". The main features are as follows: It has 8GB of internal memory. It has a long battery life, with approximately 52 hours of music playback (for the NW-S310 series). In addition to music CDs and songs from distribution sites, videos, photos, podcasts, and lyrics data can also be transferred. It is equipped with "playback speed control" and "A-B repeat" functions, which are convenient for language learning. It also has a built-in FM radio tuner. Please understand that the operation has not been confirmed. Thank you for viewing.