* Bluetooth Version: V5.3 

* Bluetooth Chip: JL

* Audio range 2.402 GHZ - 2.480GHz

* Emission range ≥ 20M

* Mobile phones stereo BASS music player 

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

* Phones call time 12 hours

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

* Speaker size: 14mm 32Ω Bass

* Magnetic absorption function

* Vibration reminder

* Micophone: 42dB±3

* Output: 22mW*2

* SNR: ≥95dB

* Colors: black,blue,red,green