Black Solar 8 LED Roof Spoiler Shark Fin Antenna Flashing Light Car Decorative Lights Modifications LED Strobe Light 100% brand new and high quality Made of eficient solar panel and powered by solar In sunny day: Could be used 15 to 20 days after absorb strong sunlight for 15 hours'In rainy or couldy day:Could be used 3 to 5 days after abosorb sunlight for 8 hours With good waterproofness and its not necessary to take off on rainy day or car washing Stop working intellectually, using single-chip, with time-lapse closing system, automatic stop working after parking or in motionless state for 2 minutes