Vocalism Principle: Dynamic
Control Button: Yes
Active Noise-Cancellation: No
Communication: Wireless
Volume Control: Yes
Sensitivity: 120dB
Wireless Type: Bluetooth
Is wireless: Yes
Support APP: No
Function: Common Headphone
Package List: User Manual
Impedance Range: up to 32 Ω
Connectors: USB
Model Number: L21
Headphone Pads Material: Other
Bluetooth Version: 5.0
Codecs: AAC
Support Memory Card: No
Driver Diameter: 10mm
Resistance: 32Ω
Waterproof: Yes
Frequency Response Range: 20 - 2400Hz
Total Harmonic Distortion: 1%
With Microphone: Yes
Features: Waterproof
Charging Method: Charging case
Magnet Type: Neodymium
With Microphone: Yes
Features: Waterproof
Charging Method: Charging case
Magnet Type: Neodymium
Name: TWS Wireless Bluetooth Earphones
Colors: Black, White
Feature 1: Bluetooth V5.0 + 350mAh Charging Case
Feature 2: Auto Pairing + HIFI Stereo Sound
Charging Box Capacity: 350mAh Charging Case For Earphone
Bluetooth Version: Bluetooth V5.0
Operation Distance: Around 10m
Music Time: Around 60hr(with case)
Feature 3: fone de ouvido bluetooth + audifonos para celular
Style 1: Headphones Wireless + Bluetooth V5.0 TWS
Style 2: HIFI Wireless Earbuds + Ture Wireless Earbuds
Style 3: uriculares bluetooth inalambrico + wireless bluetooth headset

Bluetooth Wireless Headphones with Microphone Sports Waterproof Bluetooth Earphones HIFI Stereo Noise Cancelling Headset Earbuds

Product Features:
1, Bluetooth V5.0, support most of bluetooth devices and lower power consumption

2, 350mAh charging case can full charge 2 earphones around 15 times, offer more music time, also it can charge your phone as a power bank.
3, With waterproof technology, no need to worry about water and sweat anymore
4,  8mms dual drive units, enjoy 9D strong deep bass music sound 
5, Popular The keys control function, support switch songs, phone call and call voice assiatant.

Accessories Lists:
2* Bluetooth Earphones
1* Charging Case
1* USB Cable
1* User Manual
2* Earphone Cups(L,M Size)