The product allows for independent installation and using as it has easy installation and controlling. It is able to detect any stable or moving speed monitor ahead, detect traffic monitors or stabilized cameras (near traffic lights) in advance, and then guide you to drive safely and avoid traffic jams. Made of the premium ABS material, the product is durable and portable. The English(dual languages switching) voice alert function is available for this product. The length of the product is 9.9cm, the width is 6.2cm, and the height is 3.3cm. It is applicable for DC 12V cars. Item Name: Speed Radar Detector Material: ABS Operating Voltage: DC 12V Working Current: 1000mA Languages: English(Dual Languages Switching) Frequency Range: X-band: 10.525 GHz+25 MHz/K-band: 24.150 GHz+100 MHz/KA-band: 34.700 GHz+1300 MHz/KU-band: 13.400 GHz+25 MHz Detection Angle: 360 Degrees Warning Distance: 200m-800m Detection Frequency: Full Frequency Detection Size Details: Size: 9.9cm x 6.2cm x 3.3cm/3.9" x 2.44" x 1.3" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension differences due to different manual measurements. Package Includes: 1 x Speed Detector 1 x Power Cord 1 x Anti-slip Pad 1 x User Manual