Powered by 2 replaceable AA alkaline batteries, this sprayer features a precise internal O-ring fit to eliminate any leaking if the bottle tips or falls. Also, a flexible dip tube with filter prevents clogging and helps to spray at all angles. This ergonomically-shaped bottle is designed for optimal weight balance during use. Lastly, an internal breather valve allows for optimal flow. This product is backed by a 1-year limited warranty.