1. Aluminum alloy material with stable performance and long service time. 2. Small and lightweight, convenient to carry at any place you like. 3. Unique processing design, with extrodinary outlook like a pen. 4. Water-resistant, can use it in rainy day, but can not put it into water! 5. Mode: 3 Mode. 6. Built-in 4800 mAh rechargeable battery. 7. Lumen: 350-800.