Moreover, there is also a lock-on function that ensures you can cover a lot of the ground without the need of holding down the trigger. The M4 MY4SONS 4-Gallon Battery-Powered Backpack Sprayer is ...

With just one-liter capacity, this anticorrosive sprayer is convenient to handle for small jobs and can also switch to mist mode. It features a locking trigger to give your hand a rest.