Featuring electric pump operated by Lithium Ion power bank (Wall charger is NOT included), enjoy the convenience of pump-less portable sprayer. One complete charge can spray over 5 hours (or over 40 gallons).%ocs%The sprayer has both powered sprayer and pressure sprayer functions. Tank is 100% sealing tested for quality control, water residue maybe in tank.%ocs%Turn off pump if you need close shut-off valve over 30 seconds during spot spray.%ocs%Turn on power bank, switch on eclectic pump to spray. Put the power bank in waterproof bag for protection.%ocs%1 year limited warranty. Any issue due to material and workmanship during warranty period will be repaired or replaced. Questions or concerns about product, please click “5Vtek” at listing page to “ask a question”.