MobilePal 3-Pack ProofFit 1.7-Inch Headset Audio Jack Extender for iPhone and Android with Gold Plated 4-Pole 3.5mm Connectors (Black) VERSATILE: Made for devices with 3.5mm (1/8 inch) headset audio output, including iPhone and Android smartphones; Works with headsets and headphones with or without volume controls. Also supports 3.5mm credit card readers such as Square Readers and PayPal Here. SLIM DESIGN: Extends the reach of any 3.5mm audio input or output. Ultra-slim front barrel fits most phone cases. Ideal for slim cases. GOLD PLATED CONNECTORS: Provides maximum conductivity and prevents corrosion; Allows consistent signal between components using high-quality copper. ALL METAL CONSTRUCTION: Made with pure copper and featuring a nickel coating, this extender is stylish, strong, and durable. 100% SATISFACTION GUARANTEE: Sold with a 30-day money back guarantee and an ironclad manufacturer's lifetime warranty when purchased exclusively from MobilePal Direct. Beware of low-quality counterfeits from other sellers.