Style:Neckband/In-ear

* Bluetooth Version: V5.3

* Support profiles: HSP,HFP,AVRCP,A2DP

* Frequency range: 2.402 GHz - 2.480GHz

* Audio range: 20Hz-20KHz

* Sound Mode: Real Stereo Bass

* Charging time: About 2 hours

* Voice assistant

* Support card: Micro sd card

* Battery : Li-ion 500mAh/3.7V（or 500mAh）

* Music time: About 50 hours 

* Talk time: About 50 hours

* Stand-by Time: Up to 1000 Hours

* Operating Distance: About 20 meters

* Output: 22mW*2

* SNR: ≥95dB

* Speaker Impedance: φ10mm,32Ω Bass

* Microphone: 42dB±3

* Colors: Black、Gray、Red