Socket: 1156 PY21W BAU15S, 1156 P21W BA15S, 1157 P21/5W BAY15D, T20 7440 W21W, T20 7443 W21/5W, T25 3157 P27/7W For CANBUS information: The bulb features CANBUS functionality with improved compatibility; however, some vehicles may experience hyper flashing, error messages, or non-functioning bulbs. It is recommended to use load resistors if needed. We cannot guarantee fitment for all vehicles. Customers should verify compatibility before purchasing. Placing an order indicates understanding and acceptance of this notice. Due to high output, the bulb generates significant heat and is suitable only for turn signals, reverse lights, and brake lights. Not intended for headlights, fog lights, or daytime running lights. When installing four bulbs simultaneously, some vehicles may experience errors or hyper flashing. It is advised to use load resistors to resolve such issues. For four bulbs, two pairs of 50W 6 ohm resistors are recommended. Voltage: DC12V Current: approximately 1.75/0.25/0.75A (measurement errors may occur) Power: approximately 21W (single contact), 3W/9.5W (double contact) (measurement errors may occur) Lumens: 2100LM Number of LEDs: 3014-144SMD Color: White/Red/Yellow (Amber) Application: Car, motorcycle, truck, SUV, ATV, and other vehicles Heat Dissipation: Aviation-grade aluminum 6063 Waterproof Rating: IP68 Usage: Reverse lights, turn signal lights, brake lights Features: 1. High efficiency with low power consumption 2. Environmentally friendly and energy saving 3. Fast on/off response time and vibration resistant 4. Long lifespan up to 50,000 hours 5. Equipped with 3014-144SMD high-brightness LEDs, brighter than standard incandescent bulbs 6. 360-degree beam angle for full coverage illumination 7. Easy installation, plug-and-play design Package includes: 2 x LED Bulbs Note: 1. If hyper flashing or error occurs, consider using a load resistor or decoder. 2. With DC 12V power supply, you can verify bulb functionality. 3. Please confirm your vehicle's socket type before ordering.