Stereo & Immersive Sound Quality】CXK bluetooth earbuds equipped with 12 millimeters vibrating diaphragm speaker driver, provide pure balanced audio and clarity output for all music genres with soft audio and immerse yourself in the wonderful world of music. 【Latest Bluetooth 5.3 Technology】Eabuds adopt the latest Bluetooth 5.3 dual-channel transmission, providing faster one-step pairing connection speed, more stable transmission, lower power consumption and ultra-low latency listening experience than Bluetooth 5.1. 【Environmental Noise Cancellation】Each wireless earbud has built-in 2 microphones, 4 microphones provide 3 times clearer calls than other true wireless earbuds. Accurate voice pick up & effective noise isolation ensures people can hear each other clearly and loudly on the phone, providing you crystal-clear calls. Tips: Please wear two earbuds at the same time when calling. 【Ultra lightweight & Portable Design】Weighing just 0.12oz (3.3g), mini wireless earbuds feel virtually weightless as they fit comfortably and securely in your ears. Super mini portable charging case, easy to carry, it can fulfill all your daily needs by charging your bluetooth headphones anytime. 【Charge on the go & IPX6 Waterproof】Bluetooth earbuds last 6 hours of playback time with one charge and can be extended up to 25 hours with a portable charging case in use. Wireless headphones boast IPX6-rated protection that prevents ordinary splashing water and rain. (Please note: The charging case is not waterproof).