USB Insert Card MP3 Built-in Battery Portable Hang Mini Music Palyer TF Extension black

Description

--Headphone jack :3.5, screen size: no display screen.--Frequency response range: 18hz-18khz.--Operation mode: button type.--Battery type: lithium battery, endurance time :6, battery capacity :170.--Storage card type :TF card, style: neck hanging style mp3.