Model Number: Smart Time Lock weight 30g Feature 1: LCD Time Lock Feature 2: USB Rechargeable Temporary Timer Padlock If you find you can not operate the timeout or the LCD is not displayed. correctly. Please follow this way to timer: 1: the center of the LCD sn to strip the protective film and tear the film off. You find a stop under a screw on the left side of the sn. 2: Find a metal pin or metal clip and insert it into the hole to and then run it. 3: When you hear a "Bi" sound (in sound mode), the LCD display correctly. The timeout has been successfully 4: Please glue the protective film back on. colour:Black Material:ABS size:7.3 x 4.7 x 2Cm Package Contents: 4 x Time Lock 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.