Buy with Confidence: With Monoprice's Lifetime Warranty on all Cables, you can rest assured we stand behind our products and our customers.This cable has a gold plated male 3.5mm stereo (TRS) plug on each end and features ultra-slim connector heads. The cable is ideal for connecting a stereo audio output such as an mp3 player or phone to a stereo audio input such as the auxiliary input on a car stereo system. The 3.5mm (1/8") stereo TRS connector is more commonly known as the Headphone Jack on portable mp3 players and mobile phones. Quality at a Fair Price: Monoprice's rugged design and rigid quality control standards deliver high quality products at fair prices.