- Real-Time GPS Speed Tracking with Overspeed Alarm: Equipped with a GPSBDS dual-mode chip, this device provides real-time speed updates in both MPH and KMH at a refresh rate of 10Hz. The integrated overspeed alarm helps you maintain safe driving speeds, enhancing your overall driving experience. - Easy Plug-and-Play Installation for All Vehicles: Enjoy universal compatibility with a simple USB connection—no wiring required. This device is suitable for cars, trucks, motorcycles, boats, and more. It automatically powers on and off with your vehicle's ACC system, making it incredibly user-friendly. - Large HD Display with Anti-Reflection Technology: The large LCD screen features big fonts and a metal blackout coating that effectively reduces glare. Automatic brightness adjustment ensures optimal visibility in both daylight and nighttime conditions, making it ideal for drivers wearing sunglasses. - Dual Safety Alerts and Fatigue Reminder: Prioritizing driver safety, this device activates fatigue alerts after 4 hours of continuous driving. Its durable design includes a waterproof (IP67) and fire-resistant ABS-PC casing, eliminating overheating risks by having no internal battery. Use Scenarios: 1. Daily Commute: Keep track of your speed and receive alerts to avoid speeding fines during your daily drive to work. 2. Long Road Trips: Stay alert with the fatigue reminder feature, ensuring you take breaks during extended journeys. 3. Multi-Vehicle Use: Easily transfer the device between different vehicles, ensuring consistent speed monitoring without complex installations. This GPS speed tracker combines functionality, safety, and convenience, making it an essential tool for any driver.