Parking can be hard; people these days are inconsiderate and don't leave much room or maybe even box you in. It can be hard to judge distances between you and the many objects on the road. Using an ultra sonic sensor much like bats this great device can help you park your car and judge the distance between you and where you want to be. It even talks to you in a real persons voice allowing the same great help as if someone was guiding your from outside your vehicle. - Model: BTW-KY-08 - 2.3" color LCD displays distance - Rated voltage: 12V - Working voltage range: 9~16V - Rated current: 20~200mA - Detecting range: 0~2.5m - Ultrasonic frequency: 40 KHz - Detecting angle: 180 degrees - Detecting method: ultrasonic - Real-person voice reporting the distance - Bi Bi voice prompts at different levels - Package includes: - 1 x Monitor - 4 x Parking sensors - 1 x Power cable - 1 x Sensor drill - 1 x Chinese manual