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2. Directional sound transmission technology protects privacy without sound leakage T30 directional sound transmission black technology can effectively prevent sound leakage, semi-in-ear sound transmission, and reduce 99% of sound leakage. 4. 26 hours of strong battery life, listening to the whole day, the earphones have a single battery life of 7 hours, and can be used for 26 hours with the charging box 3. As light as 4.5g, it is more comfortable and can't be thrown away fans. New concept wearing method, about 4.5g body, made of skin-friendly silicone material, no pain when worn for a long time, "zero" pressure for a long time, not be tired at all 1. button touch control Light touch control The left and right ears have separate touch functions, which can cut songs at , answer and hang up calls, and wake up assistant. Music starts and stops, understands your heart better 5. High-definition calls are like face-to-face . Dual-microphone array beamforming can accurately pick up voices and filter out noise interference. The noise reduction algorithm supported greatly eliminates noise; you can make clear calls even in busy cities.