Cellink 3.7V 600mAh Li-ion Battery Bluetooth Headphones with Built Fm Radio

The HPB620BK Bluetooth on ear headphones delivers crystal clear and full-range sound. It features a super large 30mm diaphragm with rich bass. It supports Bluetooth 4.0 to wirelessly connect to your smartphones, tablets and laptops and DSP noise reduction.
It also has a 3.5mm audio socket for connecting to 3.5mm Aux input (1m 3.5mm cable included). In addition, it features a built-in FM radio, MP3 player from music on a TF card and high sensitivity microphone.
There is a built-in 3.7V 600mAh Li-ion to power the headphones and has a play time of up to 8 hours. Colourful LED screen to display status information.
Bluetooth V4.0 wireless
Microphone for phone calls
Built-in FM radio with presets
MicroSD card player & controls
LCD display for playback & FM
30mm diaphragm with rich bass
3.5mm input (1m cable included)
3.7V 600mAh Li-ion 8Hr battery