Universal Motors Lane Departure Warning Aistant System LED Projection Light Anti collision And Anti preure Line Safe Driving Features:1.Made of ABS,lightweight,mini size,portable2.Keep the led light project on the middle of the road,which helps you drive straightly,avoid collision and ensure safety driving3.The led light will be bright at daytime and soft at night,works well for any environment4.The lane departure aist device is USB charging,it can work for 8-12 hours after fully charging5.Paste on the dashboard directly with 3M adhesiveSpecification:Battery: 3.7V 150mahInput voltage: 5VBattery life: 8-12 hours after fully chargingMaterial:ABSColor:BlackDiameter:3.2cm/1.26inch x 3cm/1.18inch.Package Included:1 X Car Departure WarningNO Retail Box. Packed Safely in Bubble Bag.