Welcome to our store! This digital GPS speedometer is designed for wide application, suitable for all cars, trucks, buses, e-scooters, e-bikes, and more. It's a plug-and-play device that works immediately after power is connected – no further action required. Featuring GPS+Beidou dual chips, this speedometer ensures an accurate and consistent speed display without any jumps. The speed updates quickly with no delay. The innovative design includes a built-in sunshade, allowing for a clear and visible display even in direct sunlight. The large font makes it easy to read the speed, day or night. We offer both KM/H and MPH versions to suit your preferences. Please note that this device collects speed information from satellites, so it may not display correctly when tested indoors or in a parking lot. We recommend testing it on your car outdoors with good signal reception to ensure accurate speed display. Product Specifications: - Material: ABS - Product Color: Black - Product Size: 80 x 31 x 54mm - Product Weight: 200g - Satellite Frequency: 1575MHz - Input Voltage: DC 12V - Working Current: 200-300mA - Operating Temperature: -25-75°C 100% Satisfaction: Our customers are our top priority. If you discover any product problems after receiving the goods, such as damage or incorrect quantity, please contact the seller immediately. We will do our best to provide you with satisfactory customer service.