Tnb Black Bluetooth Sweet Earphones + Microphone Part No : Ebsweetbk Techical Specifications: Autonomy: Usb / Micro Usc Cable (Included) Definition: Lithium Battery 60 Mah Series: Sweet Output Current Type: 5 Hours Connectivity: Wireless Magnet Diameter (Mm): 10 Frequency Band (Hz): 20 – 20 000 Hz Impedance (Ohm): 32 Cable Length (Cm): 60 Cm Microphone: Universal Built-In Input Power Max (Mw): 60 Sensibility: 102 Db Cable Type: Flat Knot-Free Ofc Cable Type Of Connector: 3.5 Mm Jack