Warning light with four modes: high brightness, low brightness, red brightness, and road emergency warning (triangular red flash). Emergency flash mode with 36 red LED lights to alert others to change lanes and help keep you safe during roadside emergencies. Durable and flexible design: Triangle hazard warning light with 180-degree rotating adjustable handle for easy mounting and installation in various locations. LED work light can be hung from a truck or used handheld. USB rechargeable and battery powered: Operates using 2 x 18650 rechargeable lithium-ion batteries or 4 AA batteries (batteries not included). Can be charged via USB cable. Also functions as a power bank for charging phones or other mobile devices in emergencies. IPX4 waterproof: Protected against water splashes from any direction. Suitable for indoor and outdoor use, including car repair, workshop tasks, roadside assistance, work, camping, emergency situations, hiking, hunting, exploration, and research.