,tip heats up instantly with the of a button can heat-up up to about 1000C/1832F in a matter of 2-3 seconds.Precise, the filament tip makes precision even on the threads and knots.Battery operated,the zapper uses 1xaa (1.5v). multiple hours of use from this tool with just one battery.Easy to use,simply the button and touch to your thread. after you're done, let the tip cool and replace included cap.Professional finish, burn excess string at the edge of the knot, creating a clean finish.Model Number: Thread Zapcolor:GoldMaterial:plasticPackage Contents:1 x Thread penOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real . The measurement allowed is +/- 1-3cm.