Durable Material: The small security locker is made of solid material, the shell is very sturdy, shockproof, waterproof, and provides you with long-lasting protection. There is a high-density EVA lining inside the beach lock to protect valuables from damage. Small and Portable: External dimensions: 21.6 x 10.9 x 6.6 cm. Internal dimensions: 19.6 x 9.9 x 3.6 cm. This portable security locker is the perfect aid for your travel or business trip, its size is perfect and can be easily put into your backpack and luggage. Higher Security: The 4-digit password combination box provides up to 10,000 different combinations, far more than 3-digit combinations, and it is harder to break it. Tip: Remember to reset the password, otherwise you won't be able to open it again. Convenient to Carry: Our beach safe is equipped with a detachable steel wire rope, which is sturdy and durable. Whether you are at the beach, by the pool, or on vacation, just use the wire rope to attach it to a secure object, you don't have to worry about your valuables being left unattended. Wide Range of Applications: The travel safe is perfect for home, hotel rooms, offices, business use, cars, dorm rooms, camping or beach trips, etc. This very secure mini security locker is also a great gift for your family or friends. Tip: After entering the correct password, try tapping the shell, as the product is fully sealed and waterproof, so a little air will enter the box, thus destroying the vacuum environment. Finally, use a little force to open it.