The most secure way to travel - lock your luggage AND keep track of it. Get notified if someone takes your luggage or if it's left behind at the Airport. Compatible with Apple Find My: Locate your luggage via GPS with the help of the global Apple Find My network, or use Bluetooth to play a sound and find SmartLock nearby. Not compatible with Android. Built Tough for Travel & Water Resistant: Crafted from durable alloy steel, the SmartLock is extremely tough and impact-resistant, built to withstand the rough handling of baggage handlers so your lock and luggage arrive safely at their destination. Plus, with its IPX3 water resistance, it’s ready for unexpected rain or accidental spills, keeping you secure no matter the weather. TSA Approved and Compliant. Ensure your luggage stays secure without risking damage during airport security inspections. SmartLock features a replaceable battery that lasts up to 4 months. Even if the battery runs out, the lock will still function manually. The battery is only needed for connecting to Apple FindMy App. The most secure way to travel - lock your luggage AND keep track of it. Get notified if someone takes your luggage or if it's left behind at the Airport. Compatible with Apple Find My App: Mark your luggage as lost and locate it through GPS with the Apple Find My Network, the help of hundreds of Apple devices around the world. Or play a sound on your SmartLock to find it nearby with Bluetooth. Does not work with Android devices. Water Resistant & Ready for Adventure: Don’t worry about being caught in the rain or accidental spills. With an IPX3 rating, the SmartLock has you covered, no matter what the weather is outside. TSA Approved and Compliant. Ensure your luggage stays secure without risking damage during airport security inspections. SmartLock replaceable battery lasts up to 4 months. Rest assured, the combination lock will still lock and unlock even if the battery is dead. The battery powers the chip required to connect with the Apple FindMy network.