Connect your smartphone, mp3 player, laptop, or other audio source device to speakers, headphones, mixers, or other devices using the Onyx Series Auxiliary 3.5mm TRS Audio Cable. Unlike many 3.5mm cables, the connector heads are very thin, allowing you to plug into a smartphone with the case installed. Bend tested over 5,000 times for proven long-term durability, it features aluminum connectors for an extra measure of durability. Slim Design: Our beveled step-down design creates a secure connection, while the connector heads are thin enough to plug into a smartphone with a protective case installed. Durable: We bend tested this cable over 5,000 times with no damage to the cable or change in performance. The premium aluminum connectors provide an extra measure of durability. Gold Plated: Gold plated plugs ensure smooth, corrosion-free connections every time. Stereo Audio TRS (tip-ring-sleeve) plugs provide three conductors for the ground/return and for transmitting left and right channel audio data.