CCA is a professional earphone brand that focus on developing and designing wired in ear earphones,wireless bluetooth earphones and other accessories,with stabilized technology and superb tuning.We pursue to provide you quality sound and pure audio stereo experience.Wear it on,every one is an artist. And we have formal authorization from KZ company,all of the KZ series are original and authentic. The ZSN series by KZ has been so popular!Based on this foundation,here comes the improved ZSN Pro X.A new design of fashionable and sporty style which will bring you fantastic experience. What’s the Improvements compare with ZSN Pro? Great build qualityBass extensionTuned for musicalityGreat Value for Money HiFi Stereo Earphones The KZ ZSN Pro X has broad soundstage and premium performance with tight bass,smooth mids and bright highs,which creates immersive audio experience. HD Call&Wired Control Support mobile phone HD calling,you can easily answer phones calls by ZSN Pro X HiFi earbuds.The superior microphone can eliminate crosstalk and background static. Universal Compatible The universal 3.5mm jack enables multiple connectivity options for long-term device compatibility,including iOS,Android mobile phones,PC,MP3 and etc. Model: ZSN Pro X Connect Type: Wired Wear Type:In Ear Earbuds Impedance: 25ohm Sensitivity: 112 dB/mW Frequency Range: 7-40000Hz Plug Type: 3.5mm gold plated Wire Length: 1.2m±3cm Driver Configuration: 1 Balanced Armature 1 Dynamic Driver Note:The cable of ZSN Pro X doesn't come with volume control button,you can adjust the volume on your playing device. Package Content: KZ ZSN Pro X Earphones*1User manual*1Silicone eartips*3 pairs