Metal Body: The lock body is made of metal, sharp edges and smooth surfaces, enhanced textured metal lock. Durability and security. 99 Hours: The maximum time is 99 hours and 59 minutes. Lock once you set and start, once the time is up, it will unlock and open automatically. Please set the time reasonably. Easy to Use: LCD screen with backlight, display unlock time smoothly and clearly, 3 small buttons to set hours or minutes, easy to operate. Widely Used: The metal padlock can lock addictive items, such as mobile phone, cigarettes, snacks, drinks, ideal for kitchen, school, gym, etc. With a compact size, it is lightweight and suitable for airport and travel. You can lock your important items at any time to protect your privacy. Improve sleep quality: Reduce the time spent looking at mobile phones, fall asleep early, improve sleep quality, enhance immunity, and live a good life. Smoking control: Limit smoking, reduce the number of cigarettes per day, gradually extend the interval, and cultivate good living habits. Features: 1. Super standby time: Universal USB rechargeable, the maximum standby time can reach 500 hours after full charge. 2. Easy to use: Samll LCD with backlight, displays the unlocking time smoothly and clearly, 3 small buttons to set hours or minutes, easy to operate. 3. Metal body: The lock body is made of metal, sharp edges and smooth surfaces, upgraded textured metal lock. Durability and safety. 4.99 hours duration: Freely set the unlocking time, up to 99 hours and 59 minutes. After the timing is completed, the lock ring will automatically open. 5. Improve sleep quality: Reduce the time spent looking at mobile phones, fall asleep early, improve sleep quality, enhance immunity, and live a better life. Control smoking: Limit smoking, reduce the number of cigarettes per day, gradually extend the interval, and cultivate good living habits. Instructions for use: 1. Unlock and lock: Lock: Align the lock ring with the hole at one end, and then press down to lock it. "Locked" is displayed in the upper right corner of the screen Unlock: Press the "lock" button in the middle and it will automatically appear. The display "unlocks". 2. Set the unlock time: Press: the left "H" key to set the hour, press the right "M" key to set the minute, after setting, press the middle "lock" key to start the countdown. Before the timer starts, there will be a 5-second countdown beep (in sound mode), within 5 seconds, you can press any key to cancel the set time. 3. Start timing After 5 seconds, the countdown starts and the electronic lock starts with a long beep. The lock icon "lock" on the screen, at this time, pressing any key cannot unlock it. 4. Timing finished After the timing is finished, the lock ring will automatically pop up and the unlock icon "Figure" will be displayed on the screen. Press any key to display the current time, press the time key again to repeat the time. Features: Product Name: Metal Timer. Material: Alloy + Silicone. Color: Black. Standby time: more than 500 hours. Dimensions: Color box size 8.3*3*11.5CM, color box net weight 149G. Note: 1. Due to different lighting and display settings, the color of the item may be slightly different from the picture. 2. Please allow 0.5-2cm error due to manual measurement.becomeveryrich