Dual high definition speaker drive units, 360 surround super bass and stereo sound effect, feel the shocking bass of the music with the multifunction speaker. with a bluetooth 4.0 chipset that provides a stable signal at as far as 10 distance, enjoy your playlist with family and friends at super high volume. a full frequency speaker with micro sd battery, fm radio, bluetooth 3.5 compatibility, you've got a complete entertainment unit in the jy flashlight speaker. multi-in-1 function portable bluetooth bicycle speaker with full accessories *bluetooth music player *bluetooth hands free phone *accessories:usb charge cable sports/cycling big love designed to mount on bike’s handle-bar, it gives you a rocking stereo cycling journey in day and night. by simply pressing the power button, torch your way and can be perfectly used in outdoor hiking and emergency moments. great protection silicone protective sleeve ensure waterproof ( small rain-resistant leavel ), dustproof and shockproof. up to 24 hours music play built-in 3600mah battery can last for up to 6-8 hours on a single charge for bluetooth function. playing by micro sd card? it can play all day and night!