Classic 2.0 Everyday Backpack (14.1") Laptop Compatible triangulating its position using local triangulating its position using local cell towers Compatible with any cellular device: Track your luggage worldwide with any mobile device Multiple mobile device tracking: Connect multiple cell phones to one Trakdot device or track multiple devices from one cell phone Easy locating at baggage claim: Bluetooth function within the mobile application allows you to locate your luggage at baggage claim within 30 feet Online tracking: View your luggages location history on your PC via the Trakdot website Battery operated: Operates on two AA batteries Product dimension:80*60*20mm twoside stretch pockets the Everyday backpack is lightweight and versitile A slimmed down version of our classic backpack