Material: Aluminum alloy + fan Charging interface: Type-C Fan diameter: 65mm Product style: Foldable Product power: 5W Fan speed: 3000 RPM Single fan input: 5V, 0.2A Weight: 270g Compatible devices: 13~21 inches Product size: 260*122*29.5mm Weight (kg) with package: 365g 6 level height adjustment to relieve cervical fatigue Special design for heat dissipation Fully compatible within 21 inches devices Double triangle structure Give you a stable sense of security A multi-purpose, flexible and convenient stand