I bought a similar object before, but when I cut a hard object about 3 centimeters, the blade was not open and closed and it was broken. When I disassembled the motor, it was only moving in one direction. I don't know how long it will last If you don't use it as hard and thick as possible, you can use it for a long time.

前に同じような物を買いましたが３センチ位の堅い物を切ったら刃が開閉が為なくなり壊れてしまいました、分解したところモーターが1方向しか動かなくなっていました、今回此を買ったのはバッテリーが2個余っているのでバッテリー1個付をかいました、2個のバッテリーも使えることを確認しました、どれくらい持つかは分かりませんが、 なるべく硬く太い物には使わないようにすれば長く使えると思います。

I bought a similar object before, but when I cut a hard object about 3 centimeters, the blade was not open and closed and it was broken. When I disassembled the motor, it was only moving in one direction. I don't know how long it will last If you don't use it as hard and thick as possible, you can use it for a long time.