have unfortunately a herniated disc, so I bought the pumpe.nach promter delivery from Amazon, I immediately tested the sprayer gloria.5 liters of water to kkku on and on, for about 45 sek.schaltet the device off and you can spray with the start .The pressure is about 3 bar completely ausreichend.während spraying turns the battery again so that you have a same working pressure hast.einfach genial.wer back pain or may not always, necessarily kaufen.5 stars Gloria and Amazon sowiso !!!