Features:-It takes only 3 minutes to rapidly produce hydrogen and quickly generate 800-1200PPB of highly concentrated hydrogen.-New electrolysis technology effectively separates the residual chlorine from odorous hydrogen.-One-button operation, with a single press, the blue light turns on to start hydrogen production, and it automatically cuts off the power when the hydrogen is produced. It will show red when the battery is low and blue when fully charged.-The lid has a built-in sealing silicone ring to prevent leakage.-The cup body is made of high-borosilicate glass, a food-grade material that is resistant to instantaneous heat and cold, and is strong and durable.-With a silicone pad at the bottom, it is silent and non-slip, and not prone to tipping over.No.