Mr. Heater BOSS-XB13 Basecamp Battery Operated Shower System 12,000 BTU per hour Flow rate - .6 Gallons per minute. Scald Protection,Tip Switch and Flow Driven Ignition For use with propane gas, water can be increased by up to 35 degrees f above source water temperature 4 d-cell battery operated pump for 40 minutes of run time Complete kit includes - single outlet with quick connect shower head and pump assembly