I'm selling this because I don't use it much anymore. It's an earphone with a 1DD+1BA+1PLANAR+1PZT configuration. I purchased it from AliExpress around June 2025. Used for about 40 hours. The included ear tips are unused, and the cable was used for about 10 minutes. It's 3.5mm. * The included earphone case is not included. This is a used item. Please consider this before purchasing. The following is an automatically generated description: The SuperMix 4 is re-cableable and comes with ear tips in 3 sizes. - Model Name: SuperMix 4 - Ear Tip Sizes: 3 sizes (small, medium, large) - Cable Type: Re-cableable (silver-plated cable) Thank you for looking.