Wireless headset employing bone conduction technology, offering a comfortable fit and clear sound quality. - Model Name: OPENCOMM 2 - Type: Bone Conduction Wireless Headset - Accessories: Carrying Case - Warranty: 2-Year Global Warranty - Brand: SHOKZ Thank you for viewing. I purchased this unopened item on Mercari and used it once. I am selling it because my remote work plans fell through. It works without any problems.