Waterproof BT MP3 Sports Running Music Player black

Description

--Headphone jack: in-ear,screen size: no display screen.--Frequency response range: 18hz-20khz, operation mode: button type.--Battery type: dedicated lithium battery, battery life :12 hours, battery capacity :290mA.--Storage card type: built-in memory.--Additional functions :U disk, bluetooth support, MP3 headset.