Design concept: • Combining vacuuming mechanism with a built-in electronic humidity meter to create a perfect environment for preserving precision instruments. • Facilitating vacuum preservation condition by pumping action. • Automatic electronic monitoring of humidity. • Utilizing Boyle’s law to enable its dual security feature: Extracting the air by pumping actions to gently inflate internal cushion to embrace the internal content. Material: • PC plastic to assure higher transparency, and rigidity. • TPR handle to ensure comfortable handling. • Silicone packing breakthrough technology to seal box firmly. Visual indication: • Vacuum indicator to show vacuum condition of the box. • LED indicator to signalise safety range of humidity; LCD panel to show humidity percentage inside the box.