2 LED Beads With PIR and Super Bright. Built with 6500K LEDS (2323 SMD LEDs)with PIR(Partial Internal Reflection) lens, which produced non-flickering enough round distribution light. So that the rear of the vehicle can easily find the front of the vehicle brake. Play to prevent the occurrence of rear-end accidents. Optimal Replacement for All 10mm LED Bulbs. Universally fit for 10mm base diameter LED bulbs. 20Pcs/kit(2323 SMD LEDS)with PIR lens, which produced non-flickering enough round distribution light. It is a good replacement for the old and stock LED bulbs. Note. Make sure the output voltage is 12V. Otherwise, it may not work. Heat Dissipation and Long Lifespan. High-power drive circuits and SMD chips can speed up heat dissipation and keep low working temperatures energy-saving and environmentally friendly. Designed to serve 50. 000 hours for you. Plug and Play. Direct Replacement. No wire is required. Featured with polarity design. If the light is not on. Please reverse the polarity and try it again. Widely Used. A common use for interior(map. dome. cargo. courtesy) lights, license plate lights, parking lights, turn signal lights, corner lights, side marker lights, tail lights, and backup lights. Common use for cars, trucks, motorcycles, scooters, trailer, boats, marine etc..(According to the model of your car)