Ray-JrMALL MR.Jiang Bicycle Lamp 9 LED Safety Warning Rear Tail Light Suitable for students, baby stroller, jogging, walking, bicycles, car emergency, horse-riding, road emergency and camping etc. Power supply:2 x AAA battery (not included). Material:engineering plastics + waterproof rubber washer. Exterior:red body and clear sides. Flash modes:1.all lights on.2.all lights on and quick flash.3.all lights on and slow flash.4.2 lights flash clockwise.5.2 lights counterclockwise.6.2 lights scroll and quick bounce flash.7.2 lights scroll and slow bounce flash.