Not long ago, I bought a Matin Super Giant Blower via an online store. Well, the function of it is pretty obvious; that is to blow off dust from camera’s sensor as well as dust inside the camera. It is effective I would say as it only needs a couple of blows to get the dust off my DSLR’s Pentaprism.
But now, instead of blowing off dust, it is ‘collecting dust’ in my bag because I rarely use it. Hehe.