Description: Pulsating air colum created melodic two-tone (dual tone) sound with fan like sound propagation. Long life & reliability Easy installation and reliable/ convenient for security driving Power supply: 12V Siren :Low 410Hz; High 510Hz Specification: Material:ABS+Metal Size:10x9x9cm/3.94x3.54x3.54inch Color:Blue Package Includes: 1 Pair Snail Horn Note: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light,the picture may not reflect the actual color of the item.Thanks for your understanding
