TruePower 30-9240 14" x 14" LED Safety Warning Flashing Triangle 12 bright red LED lights are visible up to 2 miles PVC construction provides durable, weather resistant protection 3 magnets on the back adhere to automobiles 14" x 14" PVC folds easily for storage in trunk, glove box or under seat 3 grommets offer easy hanging / tying options. 2 AAA battery (not included) provides up to 50 hours of continuous use