OY631 Bluetooth Noise Cancelling Single Ear Wireless Headphone With Microphone, OY631 Option:OY631 pH test range: 0

pH test range: 0

Power supply: USB-C interface

Charging time: 3

32GB (NOT included)

Input Voltage: DC12V 3-4A

OY631 Bluetooth Noise Cancelling Single Ear Wireless Headphone With Microphone, OY631 Option:OY631 pH test range: 01. Professional noise cancelling headphones: Humanized adjustable dust proof high sensitivity microphone enables the latest noise reduction technology, can accurately pick up your voice and block noise from the surrounding. Even in noisy environments, OY631 can ensure clear calls. 2. Wireless headset with mute button: There is a mute button on the microphone, if necessary, just press the button to mute your voice during a call. The mute button is only