Power scrubber
From DDL Wiki
(1) Basic Mechanical Functions
The push of a button triggers the electric motor which rotates the driver. The driver spins the scrubber head. Various amounts of force are applied to the surface of the object manually, according to user preferences. The button is pressed again to turn the motor off.
(2) Step by Step User Study & Observations
a. Initial Assembly Pull out the battery holder at the bottom of the product Insert four AA batteries with correct orientations