Heys 15034-0002-21 21 in. Smart Luggage Hardside Silver The Heys Smart Luggage is a fully-connected luggage that delivers a seamless and complete travel experience for today's modern and tech-savvy traveler. Features Developed with the Heys Smart Luggage app which allows you to control interactive luggage functions through your Apple or Android device Powered by 2x AAA Batteries, approved for Check-in (Does not use Lithium-Ion batteries) Smart handle with integrated scale Bluetooth smart TSA lock to remotely lock or unlock your luggage using your smart phone Proximity alarm that alerts you when you're a distance away from your luggage Made from 100% polycarbonate for ultimate durability and impact resistance Fully lined interior with a zippered divider featuring a large mesh zippered pocket 360 spinner wheels for smooth and fluid movements with your luggage Specifications Color: Silver Volume: 21 - 42 L Material: 100% Polycarbonate Expandable: Non-expandable TSA Lock: Yes, 21 has a built in TSA Lock Wheels: 360 Spinner Wheels Handle: Internal Handle System made from lightweight aluminum Battery: 2x AAA Batteries Dimensions: 21 x 15 x 9