Material: Corundum

fits most electric drills

strong and stable

Shelf Life: 3Years

Multiple pockets and large capacity

Invisible Sleep Wireless Earphone Color:White+black+beige Material: CorundumInvisible Sleep Wireless Earphone FEATURES Invisible Design & Ergonomics Invisible earbuds are designed according to the shape of the ear, very mini design style, very light, fit the ear hook securely, suitable for long term wear, will not cause discomfort to the ear. Waterproof and sweatproof, accompany sports Designed For Sleeping Very mini and invisible earbuds body design, if you like to sleep with earbuds and don't like the foreign body sensation