Specifications: 

* Chip Type :AC6976 D4

* Bluetooth Version :V5.1

* Distance (barrier-free) ：≥10m

* Battery Capacity : 120mAh*2

* Charging Voltage ：DC5V

* Charging Time ：2h

* Standby Time ：≥200h

* Play time: ≥6h

* Product Weight：About 45g

* Product Size ： 40口18-150

* Water proof: IPX4

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Features:

* TWS Wireless Audio Technology

* Detachable Front Frame And Lens

* Adaptive To Various Face Shapes

* Unparalleled Surround Sound

* One Touch Voice Interaction

* Fast Charging,Lasting Endurance

* Water proof: IPX4

* When you open the temples, the power will turn on.

The left/right channels will be paired automatically.Connect your mobile device with Bluetooth for pairing, and enjoy the perfect sound quality of music or calls freely.