Bundle Includes: Mr. Heater F232000 Portable Buddy Heater, Mr. Heater 10-Feet Buddy Series Propane Hose Assembly and Mr. Heater Brass Propane Tank Refill Adapter Heat Output: With an impressive heat output of 4,000 or 9,000 BTU per hour, the Mr. Heater Portable Buddy Heater features a fold-down handle to offer unobstructed heat output Piezo Sparking Mechanism: The Mr. Heater Portable Buddy Heater takes the guesswork out of operating. Simply rotate the knob to pilot and push to light the unit and the Piezo sparking mechanism will get things started Safe Heating: Safety features include an Oxygen Depletion Sensor (ODS) to detect low oxygen and a tip-over detection system to automatically shut off the unit should it accidentally fall Portable: You can depend on the Mr. Heater Portable Buddy Heater to keep you warm and comfortable no matter where your travels may take you 4,000 or 9,000 BTU per hour Heats up to 225 square feet Runs on propane gas (1 lb cylinder) Single control start knob Swivel regulator Piezo sparking mechanism Tip-over safety shut-off Automatic low oxygen shut-off system (ODS) Hi-Low heat settings Fold down handle