This watchmaker's and jeweler's tool is perfect for demagnetizing tweezers,screwdrivers, as well as other small tools and parts. It can also magnetize tools,such as screwdrivers, which can come in handy when working with small screws that can disappear when dropped. Due to the high power of this unit, the current should not be on continuously, but in is this unit features an automatic shut-off. It has no moving parts, so they can never wear out, and thanks to its , it not overheat or burn out. This is a necessary addition to any workbench. Features a 76 x 38mm opening, Automatic shut-off protecte circuit. No moving parts or maintenance required. To Demagnetize - Simply hold object in the center of the opening with button depressed for 3 or 4 seconds, then slowly withdraw object in a straight line. To Magnetize - Hold the part or tool against the inside of the opening and press the button for 4 or 5 seconds and release. Cord size 8 ft (2 plug) Plug Type:US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the , the Philippines and so on. Voltage:AC110V Note:The product appearance slightly from batch to batch, but it does not affect the use. Colour:As Shown Material:Plastic Package Contents: 1 * Mechanical Wristwatch Demagnetizer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.