Y02 HUD Smart Bluetooth GPS Universal Electronic Dog Automotive Speedometer 1. Material: ABS+PC 2. Power supply voltage: 1224V 3. Working voltagecurrent: 5V0.3A 4. Power: 1.5W 5. Power interface: USB 6. Functions: fixed camera, fixed speed measurement, hourly timekeeping, interval speed measurement, red light camera, speed limit reminder, speeding reminder, real-time speed, real-time positioning, real-time satellite, gas station reminder, dangerous road section reminder 7. Size: about 6.55x1.6x4.28 cm 8. Weight: about 390g Features: 1. Early warning of 300-1000m 2. Smart Bluetooth, mobile phone interconnection, adjustable sound, driving track, real-time positioning, real-time satellite signal, adjustable speed error 3. Real-time vehicle speed comparison, accurate without delay 4. 360-degree speed measurement without blind spots, unfamiliar sections, speed measurement warning 5. Speed display + electronic dog, easy and safe driving 6. 3.5-watt tweeter, live voice broadcast, real-time speed monitoring 7. HUD digital display, high integration, non-reflective, large font, high definition