LONG BATTERY LIFE: 48 hours playback's battery life, and only need to charge for 3-4 hours. You can charge it in computer or with the general charger which. Sony NWZE383 4GB Walkman MP3 Video Music Digital Media Player . Video and MP3-player with in-ear headphones, 4.5-cm LCD screen and battery Feature-rich Wireless On-ear Headphones with Integrated MP3 Player with 4- way music playback: Bluetooth, wired, USB audio and microSD card playback. MYMAHDI Music Player, 8GB with Bluetooth MP3 Player Hi-Fi Sound 60 Hours Playback; SanDisk Ultra 128GB microSDXC UHS-I Card with Adapter, Black.