New Bluetooth 5.3 Technology: The wireless headphones with built-in Bluetooth have been equipped with the latest version of Bluetooth 5.3 chip, which means better chips and technology. They transmit high-quality audio with lossless encoding, ensuring a more stable connection, lower latency and lower power consumption during data transmission. With a stable connection distance of up to 15 meters, you can easily control your music and mobile phone at home, in the office and on the go.ANC and ENC Technology: The X500 headphones are equipped with ANC (Active Noise Cancellation) technology, which is a technology that reduces ambient noise by generating reverse sound waves. The headphones are also equipped with ENC (Environmental Noise Cancellation) function, which improves the sound quality in noisy environments by reducing background noise during calls and music playback.Excellent Sound Quality: The Bluetooth headphones use 13mm speakers and excellent Bluetooth audio codecs. The wireless noise canceling headphones have 4 built-in high-definition microphones that improve the sound by 75% and provide 50% more bass. These high-quality Bluetooth headphones provide excellent HI-FI stereo music. Even in a noisy environment, they ensure high-definition voice recognition and call quality.LED Display and 30 Hours of Playtime: The battery level of the wireless earphones is designed with individual LEDs, so you can clearly see the charging level of each earbud and the charging case. The earphones come with a charging case with a USB-C charging cable, and it only takes 1.5 hours to fully charge the charging case using the charging cable. The earphones provide 4 hours of music listening time (volume 50%), and the portable charging case gives you an additional 20 hours of playtime (the earphones need to be charged multiple times in the charging case).Automatic Pairing and Touch Control: When you open the charging case, the wireless Bluetooth earphones will automatically pair and automatically connect to the last paired device. Combined with the smart touch sensor, the wireless earphones give you ultimate control. Play/pause music, answer/end calls, adjust volume, next/previous track, and activate voice assistants.Ergonomic Design and IPX4 Waterproof: The Y40 wireless Bluetooth earphones are ergonomically designed, very lightweight and easy to wear. With IPX4 waterproof function, the earphones can withstand accidental splashes of water, sweat or raindrops. They are perfect for sports, training, running, etc.