Features: Elevate your vehicle experience with our Fiber Optic Decoders, a perfect solution for seamless Bluetooth-compatible integration without compromising sound quality. This decoders is designed with precision to convert signals into fiber optic signals, ensuring transmission and crystal clear sound through the original car amplifier. For enthusiasts and owners who appreciate superior sound quality and are looking to upgrade their model entertainment system. Whether you're on a long road trip or commuting, effortlessly connect your smartphone or other Bluetooth-compatible devices to enjoy your favorite music in high definition. Our plug and play installation means no hassle or damage to your vehicle's existing wiring, making it a must have for those who value both functionality and aesthetics in car accessories. Specifications: Material: Plastic Working Voltage: 12V Size: About. 5x8cm/2x3.1in Applicable Model: for W221 2005-2013 Package Includes: 1 Set Car Aux Optical Fiber Decoders Most Box note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.