This numeral lock is TSA approved, allowing security agents to inspect checked bags without cutting the lock. It has a crush-resistant zinc alloy body and corrosion-resistant internal components for durability. The lock is equipped with an open alert indicator: a bright red button pops up when opened by TSA master key during screening and remains visible until unlocked with the set code. It features an easy-to-set and resettable 3-digit combination; the default code is 000, and users can reset it by unlocking with the current code, flipping the hidden reset switch, selecting a new combination, and locking again. TSA agents can open it for inspection but cannot view or change the password. The lock has a 4 in. braided steel cable design that can thread through tight zippers and odd-shaped luggage, suitable for suitcases, carry-ons, backpacks, Pelican cases, gun cases, gym bags, and gear bags. It has large, easy-read white digits on a matte black, non-reflective dial, which is clear even in low light and does not require reading glasses. The lock has special features including passcode unlock, portability, resettable function, TSA approval, and weather resistance, with item dimensions of 3.2 x 1.2 x 0.6 in. and made of alloy material.