Promo TWS Bluetooth Earphone V5 0 9D Stereo Wireless Headphones Sport Waterproof Earphones Mini True Wireless Earbuds for cellphone Jan 2021

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Specification

Brand Name: BLUELANS
Style: In-Ear
Vocalism Principle: Orthodynamic
Origin: CN(Origin)
Control Button: Yes
Active Noise-Cancellation: Yes
Communication: Wireless
Volume Control: Yes
Sensitivity: 120dB +/- 5dB
Wireless Type: Bluetooth
Is wireless: Yes
Support APP: Yes
Function: Sport
Function: HiFi Headphone
Function: Common Headphone
Function: For Mobile Phone
Plug Type: Line Type
Connectors: None
Model Number: 71004639
Earcups Type: Semi-open
Bluetooth Version: 5.0
Support Memory Card: Yes
Resistance: /Ω
Waterproof: Yes
With Microphone: Yes
Charging Method: Charging case
Charging voltage: DC 5V
Microphone sensitivity: -42Db
Working temperature: -10-50°C
Frequency response range: 20-20000Hz
Transmission distance: 10m
Charging time: about 1 hour
Cumulative battery life: about 220 hours
Headphone battery capacity: 50mAh
Charging box battery capacity: 2000mAh