I have been using this for three years now, I bought it for a colleague on . Not a minute regretted the purchase, very cool Shurik! Ergonomic, reliable, lightweight, very powerful! Looks like a toy) some write about the backlash of the battery, this is not a marriage, it was done on purpose so that the battery could "unfasten" during a fall. Several times I accidentally dropped Shurik from a height of 3-4 meters to the ground - no damage.