WiTbelt K200 Bright Blue Bluetooth Smart enabled Luggage Straps with Combination Lock TSA approved Anti-theft for iPhone7 World first Bluetooth Smart enabled luggage strap with paging and alert functions with LED Polyester/Plastic strap adjust to fit bags up to 70 inches with 3 dial combination lock Built with TSA approved lock Sharp design and color to ease on locating luggage Free Smartphone app available on Android iOS (App Store)