Product details of RECRSI Neckband, RE-NY027, Original Yindu Neckband Wireless Earphones Magnetic Neckband Bluetooth Headphone WaterproofBrand Name: RECRSIModel: RE-NY027Connectors:NoneControl Button:YesActive Noise-Cancellation:NoStyle:True WirelessCommunication:Wireless+WiredVocalism Principle:DynamicVolume Control:YesWireless Type:bluetoothSupport Memory Card:NoWith Microphone:YesFrequency Response Range:20-20000HzSensitivity:98±3dBWaterproof:YesPlug Type:WirelessSupport APP:NoBattery:105mAhRECRSI Neckband, RE-NY027, Original Yindu Neckband Wireless Earphones Magnetic Neckband Bluetooth Headphone Waterproof