Purchased from an authorized retailer around 2022. 【Important】 No sound can be heard from the left side. The right side is working normally. It is unknown whether the charging case's left earbud section is faulty, or if the left earbud itself is faulty. Some ear tips have been used, and the cable is unused. The Bose QuietComfort Earbuds II are wireless earbuds with excellent noise-canceling capabilities. - Brand: Bose - Model Name: QuietComfort Earbuds II - Accessories: Charging case, USB cable, ear tips - Color: Black - Features: Noise-canceling Thank you for viewing.