2-in-1 audio connector: 3.5mm for Monster Solo Beats headphone phones and 6.5mm for professional devices. | Compatible with Beats Studio, Beats Pro, Beats Detox, Beats Solo, Beats Solo HD, Beats Solo Red, and Beats Mixr. | Beveled and right-angle connector design for secure connection. | High-fidelity sound quality with noise reduction design. | High-quality gold-plated audio extension cable with a lifespan of over 5000 years. | 360-degree rotation for easy insertion, removal, and transport.