1. Material: PC+aluminum alloy 2. Beads: COB 3. Power: 10W/Voltage: 3.7V 4. Battery: built-in battery (1000mA) 5. Running time: about 2-5 hours 6. Bright mode: single-sided double-sided double flashing 7. Product size: 73 * 46 * 25mm/gram weight: 67 g 8. Features: Can be used as a bottle opener, bottom magnetic suction