Sanag A50S uses a semi-open ear-hook design for sports situations. Algorithms and sound directional technologies allow sound to travel clearly and directionally. The sound hole is in line with the ear canal, so sound can be transmitted naturally to the human ear. Earphones feature innovative Pulse DT3.0 directional sound transmission technology, which collects sound waves and reduces sound leakage. Tthe CVC noise reduction algorithm can effectively block out ambient noise in real time to maximise the original sound. The earphones are also equipped with a new dual magnet dynamic diaphragm.