Advanced Bluetooth 5.3 Chip Earphones wireless bluetooth adopts the advanced Bluetooth 5.3 technology which ensure more stable connection, lower latency and lower power consumption during data transmission. Bluetooth transmission range can reach 15 meters away. Superior Sound Quality and HD Calls Adopting bluetooth 5.3 chip rendering technology that produce stereo sound quality and crystal crisp treble. You will feel like you are at a concert as the immersive sound. The built in high quality daul microphone of the noise cancelling earphones can provide you with clear call experience. IP-X7 Waterproof The sport waterproof headphones bluetooth features with a high-level of waterproof protection by using the nano-coating material. It is ideal for strenuous workouts and all weather conditions, good for sports and physical activities, inside the gym or outdoors. Adjustable Fit for Any Ear Size Lightweight (only 4g), adjustable soft ear hook design and 3 different sizes of silicone eartips provide individualized fit and secure stay in ear when you are working out or running. Equipped with 3 pairs of ear caps (L/M/S) for your choice to get the most suitable fitting. Fast Charging Headphones wireless support Type-C fast charging, to fully charge the case only 1.5 hours via cable, which provide a more stable and safer way to charge, increases Bluetooth earbuds’ battery life dramatically. Single Mode & Binaural Mode Either usb c headphone can be used individually. Simply pick up either left or right earbuds to enter mono mode, and pick up both to enter stereo mode. And wireless earbud headphones allow you to switch seamlessly and selectively between binaural mode and mono mode.