2-pack smart timer locks with LCD display, USB rechargeable temporary timer padlock, electronic reset timer, black. Product description: Uses a USB lithium battery for charging, equipped with an SN button and 3 small buttons. It allows setting hours or minutes, with a maximum setting time of 99 hours and 59 minutes. USB charging provides up to 120 hours of continuous use. Once locked, it cannot be opened or pried open by hand. Please set the time appropriately. This combination lock is suitable for airport and travel security. You can lock important items at any time to protect your privacy. Model: Smart Timer Lock, Weight: 60g. Feature 1: LCD Timer Lock; Feature 2: USB rechargeable temporary timer padlock. If you find that the timer function cannot be used or the LCD display is abnormal, follow these steps: 1. Press the SN button in the middle of the LCD screen and peel off the protective film. You will find a stop device under the screw on the left side of the SN button. 2. Find a metal pin or clip, insert it into the hole and operate it. 3. When you hear a \"beep\" sound (in sound mode), the LCD display will be normal. The time limit has been successfully reset. 4. Replace the protective film. Color: Black Material: ABS Dimensions: 7.3 x 4.7 x 2 cm Package contents: 2 x Timer locks Only the above package content is included; other products are not included. Note: Light during photography and different monitors may cause the color of the item in the picture to differ slightly from the actual product. Measurement error is +/- 1-3 cm.