--- product_id: 12120782 title: "W03 HUD Projector Head Up Display 4 Inch Smart Voice HEAD UP DISPLAY with OBD2 Interface MPH Speeding Warning" brand: "highmantech" price: "€ 1.90" currency: EUR in_stock: false url: https://www.desertcart.sk/products/12120782-w03-hud-projector-head-up-display-4-inch-smart-voice store_origin: SK region: Slovakia --- # Auto-brightness with white LED 4-inch crisp display OBD2 interface for real-time data W03 HUD Projector Head Up Display 4 Inch Smart Voice HEAD UP DISPLAY with OBD2 Interface MPH Speeding Warning **Brand:** highmantech **Price:** € 1.90 **Availability:** ❌ Out of Stock ## Summary > 🚗 Drive Smarter, Not Harder — See More, React Faster! ## Quick Answers - **What is this?** W03 HUD Projector Head Up Display 4 Inch Smart Voice HEAD UP DISPLAY with OBD2 Interface MPH Speeding Warning by highmantech - **How much does it cost?** € 1.90 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/12120782-w03-hud-projector-head-up-display-4-inch-smart-voice) ## Best For - highmantech enthusiasts ## Why This Product - Trusted highmantech brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Smart Auto-Brightness:** Adaptive LED lighting adjusts to ambient conditions for perfect visibility day or night. - • **Crystal-Clear 4" Display:** Big, bright, and easy-to-read HUD keeps your eyes on the road and off your dashboard. - • **Seamless OBD2 Integration:** Plug-and-play connection delivers instant, accurate vehicle data like speed, RPM, and fuel consumption. - • **Effortless Setup & Updates:** Install in under 3 minutes with USB-enabled software upgrades to keep your HUD future-proof. - • **Voice Alerts & Real-Time Warnings:** Stay informed with human-like voice reminders and speeding alerts that keep you safe and stress-free. ## Overview The W03 HUD Projector is a sleek 4-inch head-up display that projects critical driving data onto your windshield using optical reflection and white LED technology. Connected via OBD2, it provides real-time speed, RPM, fuel, and battery info with voice alerts and auto-brightness adjustment. Designed for quick installation and easy USB updates, it enhances driving safety and convenience by keeping your eyes on the road. ## Description Overview: It is designed by adopting the latest integrated circuit with stable performance and has a beautiful and elegant appearance. The installation and adjustment examination can be finished within 3 minutes by using an easier and safer method. How to Work? It is using optical reflection principle, reflect the important driving data to the front glass of the vehicle. This device are placed under the windscreen of the vehicle, via OBD adapter to receive the vehicle ECU data, timely and accurate read the speed/rotation speed/fuel data and so on. Then, project it onto the front windshield so that drivers no need to look down and can be read real time! Main Features: 1. OBD cable connection 2. Outstanding definition by using white light LED 3. Common USB port good for software upgrade 4. Great for reading with accurate big screen 5. Multiple function display and automatic power on / off 6. Time display function 7. Real humanity speaking and reminding 8. Time recording of driving and parking 9. Auto adjusting the brightness when light source changing 10. Auto matching the parameter when starting up the vehicles Specification: 1. Model: W03 2. Screen: 4.0 inch 3. Data measurements: voice, fuel consumption, battery voltage, clock, Vehicle speed, RPM 4. Product size: 10.5 cm x 6.5 cm x 2 cm / 4.1 inch x 2.6 inch x 0.8 inch 5. Color: Black Incldues: 1 x WO3 Host Machine of HUD 1 x OBD-II Connecting Line 1 x Reflecting Film 1 x Non-slip Mat 1 x User Manual ## Features - It is using optical reflection principle, reflect the important driving data to the front glass of the vehicle Outstanding definition by using white light LED,Common USB port good for software upgrade - Great for reading with accurate big screen,Time recording of driving and parking - This device are placed under the windscreen of the vehicle, via OBD adapter to receive the vehicle ECU data, timely and accurate read the speed/rotation speed/fuel data and so on. Then, project it onto the front windshield so that drivers no need to look down and can be read real time! - Outstanding definition by using white light LED,Common USB port good for software upgrade - Auto adjusting the brightness when light source changing,Auto matching the parameter when starting up the vehicles ## Images ![W03 HUD Projector Head Up Display 4 Inch Smart Voice HEAD UP DISPLAY with OBD2 Interface MPH Speeding Warning - Image 1](https://m.media-amazon.com/images/I/41U4wtTqoJL.jpg) ![W03 HUD Projector Head Up Display 4 Inch Smart Voice HEAD UP DISPLAY with OBD2 Interface MPH Speeding Warning - Image 2](https://m.media-amazon.com/images/I/41blZ+EQ0nL.jpg) ![W03 HUD Projector Head Up Display 4 Inch Smart Voice HEAD UP DISPLAY with OBD2 Interface MPH Speeding Warning - Image 3](https://m.media-amazon.com/images/I/51bjFWsuwvL.jpg) ![W03 HUD Projector Head Up Display 4 Inch Smart Voice HEAD UP DISPLAY with OBD2 Interface MPH Speeding Warning - Image 4](https://m.media-amazon.com/images/I/51cK6knD7VL.jpg) ![W03 HUD Projector Head Up Display 4 Inch Smart Voice HEAD UP DISPLAY with OBD2 Interface MPH Speeding Warning - Image 5](https://m.media-amazon.com/images/I/51ii64ixwaL.jpg) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sk/products/12120782-w03-hud-projector-head-up-display-4-inch-smart-voice](https://www.desertcart.sk/products/12120782-w03-hud-projector-head-up-display-4-inch-smart-voice) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-05-31*