The On-Time all aluminum housing can support up to 4000 lbs. of pressure and can also withstand a shotgun blast. Inexpensive AA alkaline batteries can yield up to 6 months of service. The feeder unit has German clock movements and the electronic circuit can withstand up to 250,000 volts of static electricity. Special army green paint, baked on finish. On-Time Inc. gives a full 3 year unlimited warranty. If after 3 years a problem develops, On-Time will rebuild your unit for approximately 1/4 of the original purchase price. 1-12 feedings.