Fully Wireless Earphones - Brand: GLIDiC - Model Name: TW-5200 - Color: White - Features: Hybrid ANC, Bass Sound Mode - Features: Ultra-compact size, Multipoint function I purchased these about two years ago, but they are still unopened. The warranty period has expired. If you are considering purchasing these and are concerned, I can check the operation, so please comment. Please note that I will have to open the package in that case. Please purchase only if you understand that these are stored at home. Thank you for looking.