•ENC Noise Reduction: ENC dual microphones for noise reduction during calls, clear and anti-interference •Seamless and Comfortable Wearing Experience: The redesigned streamlined structure adapts to the contours of the ear, painless wearing for extended periods, lightweight and comfortable •Stability without Shifting, Perfect for Sports: Utilizing high-elasticity liquid silicone material, designed to conform to ergonomics, significantly improved stability, ensuring the earphones stay in place no matter how intense the movement •Upgraded Bluetooth 5.3: Equipped with high-performance Bluetooth 5.3 chip, ensures stable and high-speed signal transmission, quick response, and no delays or lag •HiFi Sound Quality: Bright highs, powerful lows, and balanced audio across the entire frequency range •Audio and Visual Synchronization: Whether it's gaming or watching movies, achieving audio and visual synchronization, ensures a better entertainment experience Specifications: •Bluetooth chip: JL6983D4 •Bluetooth version: Bluetooth V5.3 •Bluetooth protocol: a2dp\avctp\avdtp\avrcp\hfp\spp\smp\att\gapga tt\rfcomm\sdp •Transmission distance: straight line ≥ 10 meters •Battery capacity (charging case): 400mAh •Battery capacity (single earphone): 110mAh •Music playback time: about 48 hours •Talk time: about 16 hours •Charging time: about 2 hours •Charging interface: Type-C, DC5V 400mA •Speaker: 16mm, 32Ω speaker •Waterproof level: IPX4 Package included: •1 x Pair of Bluetooth Earphones •1 x Charging Case •1 x Charging Cable •1 x English and Chinese User Manual