Features: 

Adopt Bluetooth 5.0 chip, which has characteristics of more stable transmission and low power consumption. 

Equipped with a large capacity 4800mAh charging case, convenient for you to charge earphones or mobile phones. 

Built-in microphone for high-definition calls, accurately identify and effectively suppress external noise. 

Powerful noise reduction quieter call experience, with passive noise reduction function, internal noise reduction. 

Compact and lightweight, easy to carry.  

Specification: 

Bluetooth verison：5.0 

Headphone battery capacity: 50mAH / 3.7 V 

Bluetooth protocol: A2DP / HFP / HSP / AVRCR 

Frequency range: 2.402-2.480GHz

Environmental noise: ≤90dB 

Transmission distance: 10m 

Charging case battery capacity: 4800mAh 

Headphone charging time: about 2 hours 

Talking time: 4-5 hours 

Music playing time: 5 hours (medium volume) 

Charging case input: 5V 600mA 

Charging case USB output: 5V 1A 

Size: 

-Earphone: 22.5x17mm

-Charging Box: 110*45*32mm 

Package Includes: 2*Earphone，1*Charging Box，1*USB Cable，3 Pairs of Earphone Cap(S+M+L)，1*User Manual