1. Material: ABS 2. Light bulb: high-power beads 3. Running time: 5-8 hours/Charging time: about 2-3 hours 4. Charging voltage/current: 5V/0.5A 5. Function: Strong weak burst flashing 6. Battery: 2 * 18650 / 1200 or 2400mAh 7. Product size: 105 * 80mm / weight: 186 g