Specification: 1. Product Name: NiceHCK DZX-12BA In Ear Earphone Custo Made Earphone 2. Type: In-ear 3. Brand: NiceHCK Custom Made 4. Model: DZX-12BA 5. Impedance:16Ω 6. Earphone sensitivity: 118db/mW 7. Frequency range: 20-25000Hz 8. Interface: 3.5mm 9. Cable Length: 1.2m±5cm 10.Weight: About 20g 11.Color: Other colors also can be customized, please contact us, thanks 12.Whether with mic: No 13.Earphone Interface Type: MMCX or 2Pin interface 14.Drive unit: 12BA drive unit 15.Whether with earphone upgrade cable: Yes Note: 1. This earphone is NiceHCK custom earphone, it takes some time to customize, so when you order, you need to wait about 1-3 weeks; 2. In order to be able to perfect release energy earphone, we recommended to replace the more outstanding cable, and use the excellent DAP with amplifier driven, this will be very helpful is the perfect embodiment of the quality of the sound; 3. It is recommended burning time of 200 hours or more. 2017 New NICEHCK DZX-14BA In Ear Earphone 14BA Drive Unit DIY HIFI Custom Made Monitoring Earphone With MMCX or 2Pin Interface Dear friends, You can select the face panel in the picture below, please contact us before you place order, and tell us the face panel + interface (MMCX or 2pin) information that you need, thank you! This picture is only use for help buyers to selection face panel, because DZX-12BA with 12BA unit, my be the shell is not same with the picture shown, please understand, thank you! Note: Dear friends, this is a special custom type earphone, we customized according to the different requirements of different buyer, So before you buy it, you must know it doesn’t support return and refund,we will provide you with the best sincere pre-sale and after-sale service, any questions please feel free to contact us, hope You can understand, thank you!!!