Upgraded Double-open PadlocksThis upgraded Combo Lock come with the key. You can use the key to open the password lock and reset the password if you forget it. High Security4-digit offers 10, 000 combinations for added 10 times security compared with 3-digit lock. And it is difficult to crack, which cannot be removed by human force. Special DesignCompact size(2.56*1.2*0.47inch), light weight, and convenient for you to store and carry. There is a code line beside the lock for viewing combination effortlessly. Premium Material & WaterproofMade from zinc alloy and steel which has stable properties and can effectively prevent corrosion and rust. Environment Friendly and healthy, and more assured to use. Widely UseThis padlock is suitable for Gym/Sports, school & employee lockers, cabinets, cases, hasps and general storages. The lock is sleek and easily fits through the holes of your luggage zipper pulls. NOTE: We provide 60-DAY MONEY BACK GUARANTEE & 1 YEAR WARRANTY. We guarantee to REFUND your money or REPLACE if you encounter any problems with it.