Driving Aids With Mute Memory,City/Highway Mode,Long Range Detection,Led Display,Speed Detectors Ideal Gift For Cars Feature: [Advanced False Alarm Filtering] The driving aid features K/KA band filtering to reduce false alerts from other vehicles for blind monitoring and collision avoidance systems [Two road modes ] Optional city/highway modes allow you to select which can reduce the false frequency in densely populated areas [Quick Response] When detection, the GPS will tell you by make a sound to confirms the your speed on the stretch of road [Record Keeping] Provides complete immunity to driving aids, electronically remembers its setting for an indefinite period of time even with the power removed [Wide Detection Range] detector the latest mode (super-fast instant on mode) This can Detect any stable or mobile Radial Speed Monitor 200-1500m ahead Product parameters: Product type: Speed tachometer Material: ABS Color: Black Measurement range: 200-1500m Measurement accuracy: 200m Working voltage: 12V Scope of application: Any vehicle model Current: 200mA Display mode: LED Button method: three keys Power: 1.5W Package size:12x7.1x6.4cm/ 4.72x2.8x2.5 inch Gross weight:175g/ 0.39 lb The Package Include: 1 x Speed tachometer 1 x Car charger 1 x Use manual