Dual high definition speaker drive units, 360 surround super bass and stereo sound effect, feel the shocking bass of the music with the Zealot S1 Flashlight 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 slot, 4000mAh Battery, FM Radio, Bluetooth 4.0 Compatibility, you've got a complete entertainment unit in the S1 flashlight speaker.