DC 6V, and level long working life. Bright light color, high lightness LED bulb, Heat Resistant & Shock Resistant. Double light modes: stroboscopic (strobe) or always-on. Perfert for , guard, transportations, factory workshop, port terminals, automation machines and emergency occasions; Also can be applied to personal home use. Easy to install, small and simple; Light Size (Height x Diameter): 8.5 x 14 cm. Specification: Material: PC Plastic for Lamp Shade, ABS Plastic for Light Base Power source: 6 V DC Power: 2W Power Supply: 4 Piece AA Battery(not included) Working Current: 0.5 A Color: Red, Yellow Full Light Size (Height x Diameter): 8.5 x 14 cm / 3.35 x 5.51 inches Package Includes: 1 Piece Warning Light 1 Pack of Fasteners Note: Please allow 1-2mm measuring error due to manual measurement. Thanks.