The Einkorn Wheat Straw TWS Earbuds are made by one of the leading manufacturers in the industry. It has a large, clear imprint area that will make your design pop. A clear crystal cap allows you to watch the earbuds' charging status at all times. You can expect a crisp, clear sound with a good amount of bass making these perfect for listening to music, gaming, or talking on the phone. The earbud design is modeled after mobile device wireless earbuds, making the fit secure and good for daily indoor and outdoor activities. Version: 5.0 Quick auto paring once box opened Wheat Straw material with a clear crystal cap Speaker output: 5mW, 32ohm Speaker drive size: D10mm *2 Battery built-in earpiece: 35mAh *2 Charging station battery: 3.7V 500mAh Frequency Response: 20Hz-20KHz Charging time for earbuds: 1hour Dimension: 2.05" x 2.4" x 0.98" Net weight: 44.7g Gross weight: 82g (including charging cable + Manual + Brown gift box) Material: Wheat Straw ABS material Charging time for station: 1.5hours Playing time: Approx. 2.5 hours