* Bluetooth Version: V5.3 

* Bluetooth Chip: JL

* Audio range 2.402 GHZ - 2.480GHz

* Emission range ≥ 20M

* Mobile phones stereo music player 

* Music play time：about 12 hours( long time)

* Phones call time about 12 hours( long time)

* Battery:3.7V/130mah( with protection board )

* Speaker size: 10mm 32Ω

* Magnetic absorption function

* Micophone: -42dB

* Output: 25mW*2

* SNR:  ≥98dB

* Colors: black,blue,red,green