Sonomax Technologies Inc. PCS-100 sculpted eers Custom-Molded In-Ear Headphones Step 1 - SonoFit Position - The SonoFit Custom Fitting System will be gently positioned on your head and adjusted to your ears. Step 2 - 4 Minute Set - Wait only 4 minutes for the silicone to safely form to your ears' unique shape. Step 3 - Complete! - Simply detach earphones from the SonoFit System, attach the faceplates, and your custom molded earphones are ready!With unique sound signature driver, the PCS-100 sculpted eers custom-fitted earphones offer a single driver for all audio-lovers. It uses a single tuned dynamic speaker that delivers enhanced bass response without sacrificing speaker performance. The speaker and bass reflex generate a rich sound with bass enhanced clarity and vivid sound. In the Box - SonoFit Fitting System, 1 Tube of Fitting Lubricant, 2 Earphone Faceplates, 1 Carrying Case, 1 User Manual, 1 Fitting GuideFeatures Custom Molds in only 4 Minutes!