【IPX8 Waterproof Rating】The underwater swimming earplug with IPX8 waterproof function, which can be used in the water without damage, so that users can enjoy the music while swimming, providing a more pleasant swimming experience. It is suitable for all types of intense sports, indoor or outdoor sports such as running, cycling, rock climbing, surfing, travelling, sports, etc. 【Open Ear & Noise Cancelling Mode】This underwater swimming earphones can effectively isolate the sound, with noise cancellation function, which can make the conversation clearer and not be disturbed by the outside noise. The open ear headphones are designed for enhanced safety and long-lasting listening. It is ergonomically designed, comfortable to wear, easy to listen to all day. 【Bluetooth 5.0】These shower headphones are equipped with Bluetooth 5.0 technology, which ensures a stable Bluetooth connection and a maximum Bluetooth connection range of 33 feet (10 meters). You can listen to music, audiobooks, podcasts or make calls. It has intelligent voice notifications, which can ask to turn on, enter the pairing status, be connected, make an incoming call, turn off the battery low. 【Comfortable to Wear】These IPX8 waterproof earbuds are designed with ergonomic memory elasticity, each corner is carefully crafted for comfort. The streamlined design ensures a secure fit during any activity. Designed for a slim, lightweight, ergonomic fit that stays comfortably in place during any workout and integrates seamlessly with swimming caps, swimming goggles, sunglasses and helmets. 【Secure and Stable Fit】The underwater headphones are newly designed shark fins that rotate along the ear contour until it is worn firmly, effectively preventing the headphones from falling off even during sports, running and other sports. Considering the wearing comfort, the shower headphones adopts a highly elastic soft back wind bar, two sizes of silicone earplugs fit your ears.