1. Material: aluminum alloy, plastic 2. Applicable size: 14-18 inch laptop 3. Fan speed: 4500/min 4. Number of fans: 2 5. Voltage: (USB) DC 5V 6. Product size: 41.5 x 35 x 5 cm 7. Weight: 1.28 kg 8. Dual USB power supply mode, not occupying the notebook interface 9. Multi-speed wind adjustment to meet different needs 10. Seven levels of height adjustment, lighting can be adjusted
