TF Capacity: Max support 32GB (Not included) Powered By: 1 x AAA Battery (Not included) Screen Size: 30 x 8.5 mm Item Size: 95 x 25 x 16 mm Net Weight: 26 g Type: MP3 Player Music Format: MP3 Port: USB 2.0 Audio Output: 3.5 mm Instructions for Use: Step 1: Insert Micro-SD card before using the MP3 player. Connect the device to a computer’s USB port and wait for the driver to install automatically. Step 2: Format the Micro-SD card to FAT32 file system. Step 3: Store MP3 files with a bit rate of 128 kbps in the root directory of the Micro-SD card. Notice: - The Micro-SD card must be formatted in FAT32 format. - Micro-SD card is not included. Supports up to 32 GB. - Ensure the battery is removed before connecting to a computer. - Each MP3 player screen comes with a protective film. Color: Black Material: Plastic Package Contents: 1 x MP3 Player (battery not included) Note: Color may vary slightly due to lighting and screen settings. Measurement tolerance: ±1–3 mm.