Prompt: The appearance design of this Bluetooth earphone is simple and fashionable, adopting a circular earplug design that conforms to ergonomic principles, which can better fit the ears and provide a comfortable wearing experience. The earphone case is made of high-quality plastic material, with a smooth surface and a comfortable touch. The color of the earphones is classic black, giving people a low-key and noble feeling. There is a small touch panel on the earphones, located on the outside of the right earbud, used to control functions such as music playback and answering calls. In addition, the earphones are equipped with a charging case, which is convenient for users to carry and charge. In terms of specifications and shape, the diameter of this Bluetooth earphone is about 2.5 centimeters and the thickness is about 1.5 centimeters. The earplugs are made of soft silicone material, which can be fine tuned according to the shape of individual ears to ensure good sealing and comfort. 4K high-definition 3D image