The SOLMIMI Advantage: Intelligent step-down design of 3.5mm aux splitter makes it snugly fits any type of bulky phone case without moving off. Slim and compact size lets you carry it everywhere, bags, handbags, pockets. Backed by SOLMIMI's 1-year hassle-free customer service, your satisfaction is our goal. Solid Construction with Braided: Headphone audio splitter is created with a Crystal-like nylon braided exterior for maximum protection. 15000+ bend lifespan, anti-slip grab design, yet gentle touch feeling. Elegant and stylish metallic housing [matte black] goes great with your expensive gadgets. Superb Performance: Audio jack splitter allows you to connect Mic-Built-in headphone and 4-Pole TRRS external microphone (NOT 3-Pole TRS microphone) to PC or smartphone with a 3.5mm 4-pole combo jack at the same time. NOTE: Don't support iOS/Bose/Beats headphones for mic function. Unparalleled Sound Quality: SOLMIMI audio splitter 3.5mm adopts pure oxygen-free-copper wires, polished 24K gold-plated connector, built-in 6 spiral contacts, and aluminum shell to ensure higher audio transmission without signal loss and noise. Dual TRRS splitter 3.5mm plug brings you excellent stereo sound quality on both outputs. Headphone Splitter 2 Way: SOLMIMI PC headset splitter splits signals from one single device so that the two recipient can handle the stereo audio and microphone input separately, allows dual headphones (except dual-plug headphones) or speakers connected to most devices with a standard 3.5mm auxiliary port, like PC, smartphone, laptop, Xbox, PS4, etc, which is a great solution to share favorite audio or movies with your loved ones.