Havit E9 Semi-In-Ear ENC Noise Reduction Wireless Bluetooth Earphones, Color: White-Flagship EditionFeatures: 1. Standard version with cavity resonance sound absorption structure + dual channel low latency technology 2. Ultimate version with 360 degree panoramic stereo sound effect + digital sound enhancement technology 3. HiFi level original sound quality, creating a three dimensional surround atmosphere 4. ENC call noise reduction, clear calls even outdoors 5. 10mm small cavity, smaller, lighter and more comfortable 6. Curved surface, no pain or