Portable Mini Helmet Wireless bluetooth Speaker Bass Stereo Subwoofer BT 4.0

Specification Size 9 57 46 8 cm 3 742 912 67Version of bluetooth V4 2Device name 98KConnection distance 10 metersOutput power 3WCharging parameters 5V 0 5ABattery capacity 500mAh 3 7VSignal to noise ratio 75dBPlaying time 3 hoursCharging time 2 hours Feature The design is inspired by the bulletproof helmets of the Cold War period There is a light indicator when using A stunning stereo effect the bass booster causes the sound to wrap around Portable hanging hole enjoying fun or casual time with high quality music Package included 1Speaker1Instruction manual1Data line