7 sensors (6 sound sensors and 1 air pressure sensor) to more accurately capture background noise to adapt to different scenarios Adaptive ANC 3.0 calculates the environment in real time every 0.3 seconds and automatically adjusts to the appropriate noise reduction level based on ambient noise ACAA 4.- coaxial dual-unit acoustic design with dual-channel audio technology (digital crossover technology) for clearer, more detailed sound without timbre rendering Supports LDAC- audio, certified for Hi-Res Audio Wireless Touch-sensitive smart charger displays real-tie headphone information and adjusts noise reduction intensity through touch control ~ Support Android and iOS (Whatsapp and Wechat message notifications) Version：v5.3 Weight : 5.5g (single earphone) / 51g (charging box) Usage time (earphones only / with charging case): up to 10 / 40 hours (standard); up to 7.5 / 30 hours (ANC); up to 5 / 25 hours (LDAC+ANC) ~ Soundcore Original ? Parallel import ? Return and refund are not accept. ? Free shipping to HK/Macau when spending over $500 onwards ? China area shipping fee $130 + Local SF Express ? Three to five business day shipping. Sent via SF express. ? Exchange of defective units purchased in 7 days ? 6 months warranty ~ *Photo for reference only