Neck Wireless Bluetooth

Vocalism Principle: DynamicControl Button: YesActive Noise-Cancellation: YesCommunication: wirelessVolume Control: YesSensitivity: 123dBdBIs wireless: YesLine Length: NonemSupport APP: YesFunction: For Mobile PhoneFunction: SportFunction: Common HeadphoneConnectors: NoneSupport Memory Card: NoResistance: 16ΩΩWaterproof: NoWith Microphone: YesEarphone Features 1: Wireless Bluetooth HeadphonesEarphone Features 2: Bluetooth earphoneEarphone Features 3: wireless earphonesEarphone Features 4: Sport Bluetooth earphoneLanguage mode: English and ChineseHeadphone Bluetooth distance: about 8-10MEarphone Compatiable 1: Bluetooth Headphone for computerEarphone Compatiable 2: sport Hanging neck Bluetooth HeadphoneEarphone Compatiable 3: Double drive 6mm+6mmEarphone Compatiable 4: Stereo Bass Bluetooth earphonesEarphone Compatiable 5: Bluetooth Earphone Headset Wireless Headphones