?Limitless Use Time Add Water Anytime?400Ml Large Water Level Visible Tank. Add Water Anytime During Use To Make It Last Infinitely. The Upgrade Steamer Eliminates The Need To Wait 3 Minutes For The Boiler To Cool Down And Then Add Water, As Well As The Need To Add Water And Then Heat It Up For 5 Minutes Before It Can Be Used. Saves Time, Can Be Used All The Time And Makes Cleaning Even Large Areas A Breeze. | | ?Hands-Free Steam Cleaning?The Unique Steam Lock Button Frees Up Your Hands From Having To Hold The Trigger All The Time During Steam Cleaning, No More Constant Force And No More Hand Fatigue. Press The Lock Button, Then Press And Hold The Steam Button. Then Release Your Hand And Wait About 10 Seconds For The Steam To Come Out Automati