Specifications: Color: Blue, Green, Black, Pink, White (optional) Material: Plastic shell TF card maximum support: 8G (TF card not included) Support audio format: mp3 Interface: 1x 3.5mm headphone jack, 1x TF card slot, 1x Mini USB interface Battery: Built-in 100mAh lithium battery (included) Product size: 4*4*3cm