Ultra lightweight and compatible for small ear.The surface and Angle of E6S earbuds in-ear part have been polished and refined repeatedly to achieve a balance between beauty and comfort and make it comfortable to wear. Likewise, a single earbud weighs only 3.7g, making it as light as a feather and discreet in the ear. Ergonomic design provides a comfortable and secure fit that doesn't protrude from your ears especially for Sports, Workout, Gym.experience of long endurance. Complies with CE, RoHS. 2.36" L x 1.57" W x 0.98" H