2024 Advanced Bluetooth V5.3 and Quick Auto Pairing: Featuring advanced Bluetooth V5.3 technology, wireless earbud greatly improves transmission speed and reduces sound signal loss. There is almost no delay in the gaming/watching videos/listening music. Bring you much better using experience. After first connection, these bluetooth headphones will automatically connect with your device once you open the charging case, which is faster and more convenient. Superior Clear Call and Stereo Deep Bass: Wireless headphones adopt with DSR lossless HD rendering technology and equip with premium 13mm dynamic driver-the drive area is 4 times than the normal drive area, making the bass punchier and midrange full and textured. Headphones bluetooth worked great for phone calls,thanks to the 4 ENC-noise-canceling microphone that keep your voice sounding exceptionally clear.You can enjoy your personal space whether you are indoors, outdoor, work or exercise. Upgraded 50H Playback