Item Type: Dynamic Earbuds Material: Resin Interface: 2 Pin 0.78mm/0.03in Frequency Response Range: 20-20KHz Impedance: 16 Sensitivity: 98db Distortion Rate: 1% Horn Diameter: Approx. 6mm/0.24in Package List 2 x 2 Pin 0.78mm Dynamic Earphone 6 x Earplugs 1. Headphones can not be used alone need to be used with the headset cable or Bluetooth receiver (not included).2. No cable for headphones. 1Wide Compatibility: The headphone compatible for Weston 1964 UE3X UE18 W4R UM3X es5 TFZ0, for Trn; for KZ AS10 ZST ZS3 ZS4 ZS5 ZS6 ZS10 ES3 ES4 ZSR ZSA ED16 ED12 TRN V80 V20 for V10 V60. 2Strong Bass Effects: Dynamic earphone with 6mm/0.24in large dynamic coil, giving you excellent sound quality, stable and can play a powerful bass, so you can clearly hear a wider range of sound. 3Lossless Sound Quality: Dynamic earbuds with hifi sound quality, headphones distortion rate of only 1 percent, giving you lossless perfect sound quality, balanced air vent and master tuning, clear sound without noise. 4Dual Use: Dynamic earbuds connect to 2 pin 0.78mm/0.03in headphone cable or 2 pin 0.78mm/0.03in bluetooth receiver to convert to fully wireless headphones or wired headphones with high sound quality. 5Noise Canceling Design: 2 Pin 0.78mm/0.03in dynamic earbuds block ambient noise and provide immersive sound. Stable and comfortable to wear for a long time without pain, lightweight design, noise reduction and noise isolation. 6Elegant and Fashionable: 2 Pin 0.78mm/0.03in dynamic earbuds are made of superior resin, durable and long lasting. The jewel like appearance not only looks elegant and shiny, but also practical and durable.