These fully wireless earphones support Bluetooth 5.0, weigh a light 4.5g, and offer approximately 5 hours of use. - Brand: GREEN HOUSE - Model Name: GH-TWSA-BK - Connectivity: Bluetooth 5.0 - Weight: 4.5g - Battery: Includes charging case - Usage Time: Approximately 5 hours - Color: Black Thank you for viewing. Please be sure to check my self-introduction. I received these from a family member about 8-9 years ago; they were included in a lucky bag. As shown in the images, I'm unsure which size ear tip is missing. I used these for about 3 years. Power-on confirmation has been completed. Please refrain from purchasing if you are sensitive to minor imperfections or scratches.