It is in the design of compact which makes it small and only takes a small space. It is waterproof which makes it available for outdoor uses. 18 LED lights ensures the super brightness. It has a long service life Easy to install. Size: 5.5 x 3.2 x 1.8 cm Light color: Yellow LED quantity: 18 Voltage: 12V Exension cable length: 1.5M (?0.2) Three Selectable Strobe Patterns: Strobe Pattern A - Alternating Fast Strobe Strobe Pattern B - Alternating Single Strobe Strobe Pattern C - Simultaneous Strobe ++Package included++ 1 set emergency strobe flash light(with 6 lights) 1 x Accessory 6 x Extension cables A MUST for any Service Vehicle, Tow Truck, Snow Removal, Rural Mail Delivery, etc.