Product Name: Crossover Filters Frequency Divider; Material: Plastic,Aluminum Alloy Package Content: 2 x Crossover Filters Frequency Divider; Shell Color: White, Red, Blue,Yellow Dimension: 12.1 x 9.1 x 4cm/4.8" x 3.6" x 1.6"(L*W*H); Battery Included: No Fequency Point: 4000Hz ...Product Name: Crossover Filters Frequency Divider; Material: Plastic,Aluminum Alloy Package Content: 2 x Crossover Filters Frequency Divider; Shell Color: White, Red, Blue,Yellow Dimension: 12.1 x 9.1 x 4cm/4.8" x 3.6" x 1.6"(L*W*H); Battery Included: No Fequency Point: 4000Hz; Filter: W 12dB/ oct, T 12dB/ oct Impedance: 4-8ohm; Power: 180W 2pcs High Low 2 ways passive crossover. This product can use at your car, Home, Stage or KTV. Using this Crossover Filter for Audio Frequency Divider on your car, motorcycle, in order to have a better listening experience.