From United States
This is an active noise canceling headset (Electronic Technology Noise Cancelling), not a conventional passive noise canceling headset.Most headset advertisements have a noise reduction function, that is, passive noise reduction, which can isolate external noise through the outline of the earphone, and is not active noise reduction.This headset is active noise reduction (electronic technology) Active Noise Cancelling Wireless headphones:De-noising depth: ≥25DBB, which can remove most of the outside noise, you can enjoy your high quality music. SOUND QUALITY:BES2000IS chip Bluetooth 4.2 Headphones with 10MM precision speakers, professional engineer debugging, reduce Bluetooth delay, heavy bass, high-definition high-frequency, let you marvel at the sound quality experience. Long Life Battery:180ma large capacity battery is enough to support 10 hours of continuous playtime. Super Comfortable: Food-grade silicone tube contacts the skin, leaving you feeling uncomfortable.IPX4 Sweatproof for running, working.