Bluetooth 5.3 Earphone, Single Ear, Over 100 Hours of Continuous Use, Wireless, Ear-Hook Type, with 500mAh Charging Case, LED Battery Level Display, CVC8.0 Noise Canceling, Compatible with Both Left and Right Ears, Hands-Free Calling, Built-in Microphone, Mute Function For Remote Work / Driving / Online Meetings / Business Chat Brand: Boytond Color: Black Ear Placement: Over-Ear Headphone Type: In-Ear Impedance: 13 Ohms Noise Control: Adaptive Noise Canceling Please understand that this is a used item before purchasing.