Rechargeable Lithium Ion Battery - 750MAH Lithium Ion battery, the battery life can be more than 100 hours and it can be recharged with cigarette lighter or USB flash drive Reliable and Durable ABS Materials - Made of high-strength transparent engineering plastics, they are wrapped with TPE thermoplastic elastomer. Anti-rollover, waterproof (20 meters deep), dustproof, oil-proof, corrosion-resistant Super High Brightness - Equipped with 16 ultra-bright LEDs, the lighting can be seen up to 1 mile away at night and radiate outward 360 degrees, bring visual awareness to any site or event Easy to Use -- One key controls all patterns, including on and off, With the magnet to attach to the vehicle or any magnetic metal surface 9 Different Flashing Patterns -- Improve your visibility and safety precautions with these lighting patterns. Included SOS Rescue and 2 LED flashlights that can help in different situations