Main Features: ● 3.5mm plug, easy to pair with almost audio devices.● Full steel shell, durable and good sound quality.● With noise reduction technology, bring you beautiful sound effect.● Built-in high quality mic and speaker to provide clear calls. Function: Answering Phone,HiFi,Microphone,Noise Cancelling,Song Switching Application: Computer,For iPod,Mobile phone,Portable Media Player Cable Length (m): 1.2m Connectivity: Wired Driver unit: 10mm Frequency response: 20-20000Hz Impedance: 16ohms±15 percent Plug Type: 3.5mm Sensitivity: 90dB±3dB Package size (L x W x H): 16.00 x 8.50 x 2.50 cm / 6.3 x 3.35 x 0.98 inches Package weight: 0.096 kg Product size (L x W x H): 120.00 x 2.00 x 2.00 cm / 47.24 x 0.79 x 0.79 inches Product weight: 0.070 kg Package Contents: 1 x Earphones