OY631 Single Ear Headset Bluetooth Headphones with Microphone Noise Cancelling Head-mounted Headphone for Cell Phones PC Tablet

Features:
Single-sided design, which is ideal for having an open ear to your surroundings on calls.
This headset adopts the latest BT 5.0 technology, fast connection and stable transmission.
Lightweight headset with adjustable headband fits any head shape; soft earpad anti-slip pad stays securely in place for all-day comfort.
Easy to use, You can easily control the music/calls with buttons on the headset(volume +/-, power on/off, answer/reject calls, switch songs).
The rotatable microphone is able to accurately pick up the sound, you can freely adjust the angle of the microphone to make the sound clearer and louder.
Built in 300mAh rechargeable lithium battery, provides 30-60 hours of talk time, about 100 hours of standby time, with charging base, convenient and fast charging.