The detector provides a function of English/Russian(dual languages switching) voice alert. The speed detector can guide you to drive more safely and avoid traffic jams because it can detect any stable or moving speed monitor ahead and detect traffic monitors or stabilized cameras (near traffic lights) in advance. Made of high-quality ABS material, the product is durable and portable. You can install the product easily and use the product independently. The length of the product is 12.9cm, the width is 6cm, and the height is 3.1cm. It is applicable for DC 12V cars. Item Name: Speed Radar Detector Material: ABS Operating Voltage: DC 12V Working Current: 1000mA 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 Voice Alert: English/Russian(Dual Languages Switching) Size Details: Size: 12.9cm x 6cm x 3.1cm/5.08" x 2.36" x 1.22" (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