Fordable Bluetooth V4.1 Wireless Headphones with Mic. Answering Phone, Bluetooth, Microphone, Noise Cancelling, Song Switching, Voice control, Very soft and comfortable, Doesn’t add burden to your ear, Anti-fingerprint, Oil resistance!Brand: QCYColor: Red, Black, WhiteSpecifications:General Brand: QCY Model: QCY50 Color: Black,Red,White Wearing type: Headband Function: Answering Phone,Bluetooth,Microphone,Noise Cancelling,Song Switching,Voice controlProduct Details:Headset type: Dynamic Connectivity : Wireless Connecting interface: Micro USB Application: Mobile phone Driver unit: 40mm Sound channel: Two-channel (stereo) Impedance: 32ohms Sensitivity: 105±3 dBExtended FunctionFM frequency range: 87~108MHz Bluetooth: Yes Bluetooth Version: V4.1 Bluetooth distance: W/O obstacles 20m Bluetooth protocol: A2DP,AVRCP,HFP,HSP Bluetooth mode: Hands free,HeadsetDimension and Weight:Product weight: 0.145 kg Package weight: 0.250 kg Product size (L x W x H): 19.00 x 16.50 x 4.00 cm / 7.48 x 6.5 x 1.57 inches Package size (L x W x H): 25.00 x 16.00 x 5.00 cm / 9.84 x 6.3 x 1.97 inches