: A tight seal is critical for locking in moisture. You can test a humidor's quality by letting the lid drop; it should make a "whoosh" sound and settle slowly rather than slamming.
1,500-Count Electric Cigar Humidor, Built-In or Freestanding - Newair
When buying a humidor, look for these essential features to ensure your cigars remain in peak condition. The primary goal of a humidor is to maintain the : a stable environment of approximately 70°F and 70% relative humidity. Core Technical Features