The TOZO T10 has a fairly simple construction, with a typical stemless look and sleek plastic construction. The earbuds are comfortable, but since there is no physical feature like a hook or fin to hold them securely in the ear, finding the right size ear tips is essential; TOZO comes with five pairs of ear tips in different sizes and shapes (six pairs total from XL to XXS), but having the earbuds stay in your ears If you have always been bothered by earbuds staying in your ears, this is probably not the product for you. However, after the third try, I found just the right ear tips and they never fell out again. It’s perfect. No matter how many times I jump or shake my head, they stay in place. You can also sleep with these earbuds on (as comfortable as sleep headphones). In conclusion, I think you will agree that these wireless earbuds are one of the most comfortable earbuds on the market once you find the right fit for you. The TOZO T10 Bluetooth 5.0 wireless earbuds have excellent battery life. Even after using these earbuds for almost 4 hours, the battery life only dropped to 50%. Therefore, using these earbuds for 6-7 hours continuously is not a problem. When the batteries in these earbuds run out, they can be recharged in the charging case. In our experience, both earphones were fully charged after 5 hours.