Stupid Car
- ★ Distance Scale Lines - Truck backup camera wireless monitor that features an accurate distance scale line display for proper parking and reversing without relying on side mirrors alone. And it can also adjust the width/length/downward angle for guide lines, which meet all your needs for most of vehicles..
- ★ Good Service - DoHonest offers clear user guide (installation video), 45-day money-back guarantee and 2-year warranty. 24 hours after-sales service and Professional technician team is available, Just contact us if there's any issue for S4 back up cameras for cars and trucks..