PERFECT ITEM FOR THE HOME AND OFFICE OR WHILE TRAVELING. THIS ITEM IS GREAT FOR MOISTURIZING THE SKIN, INCREASING HUMIDITY, REDUCING DUST AND BACTERIA OR REMOVING ODORS AND SMELLS. WORKS WITH AN SIZE WATER BOTTLE. HOWEVER, WATER MUST BE REFILLED IF WATER IS BELOW THE FILTER. SAFETY AUTO SHUT OFF AFTER 8 HOURS. POWER CONSUMPTION: 2W/VOLTAGE: 5V DC. OUT 1 OZ. PER HOUR. POWERED BY MICRO USB CABLE. WATER BOTTLE IS NOT INCLUDED. USB, 2 FILTERS AND INSTRUCTIONS INCLUDED. 2 1/2" H X 3" DIAMETER