1.Bone conduction technology delivers music through your cheekbones, ensuring ears remain completely open to hear ambient sounds 2.Open ear can protect your hearing and also friendly for weak hearing people 3.Durable neckband with premium material can 360° bending without deformation 4.IPX6 waterproof 5.Liquid silicone hook for long time wearing comfortably 6.External boom Microphone allows you to position the mic perfectly for optimal voice pickup 7.With ENC