This is a condenser made of aluminum alloy. It has reasonable design, practical functions, and can be well applied to car rectifier. Simple structure and excellent craftsmanship make it easy to use and have excellent durability, will provide you with good service. Features -Color: Blue. -Material: Aluminum Alloy. -Size: About 6.20X3.50X3.50cm/2.44X1.38X1.38in. -Nominal capacity: 2.85V400F. -Tolerance: 10%. -Equivalent series resistance ( ): None. -Operating temperature range: -20-75 degree centigrade. - Reduce clutter interference and improve the sound quality of the car audio system. - This is a very efficient and practical super condenser, which will meet your needs very well. - Sturdy series structure, low internal resistance, high energy. - Applicable to starting the automotive rectifier improves the battery life of the audio speakers. - This item is a capacitor for car use. With resistance monomer equalizing function. Package list: 1 x super capacitor