Microphone adapter included. Connect to the included microphone adapter, not only mobile phones and tablets, but also PCs, speakers, recorders, camellers, etc. Product Weight: 1.1 oz (30 g); Frequency Range: 20-16 KHz; Voltage: 2.0 V-10 V.DC; Output Impedance: ≤680 Ω SNR: >63 dB; Audio Terminal: 3.5 mm; Cable Length: 4.9 ft (1.5 m)