No sore hands with this sprayer. Pump, point and shoot. It doesn't get any easier.
Easy tho use on/off button.
Strong UV-stabilised plastic.
Adjustable nozzle for fine spray or stream.
Comfortable, moulded handle.
Remember not to use the same sprayer for killing weeds and bugs/fungus, have them labelled and only mix up what you need to use in one spraying session.