The product is an OEM Bose rear subwoofer speaker for a 2008 Infiniti G35 sedan. It is a genuine Infiniti part with the part number 28138-JK11A and features a round shape in black color. The speaker is designed as a woofer with a one-way speaker design, providing bass for an enhanced in-car audio experience. It is a used part in good condition, suitable for Infiniti G35/G25/G37/Q40 sedans from 2007 to 2015.