GPS Tracker Size:2 Pack Durable wheel housings and skid Durable wheel housings and skid guards protect against abrasion on high wear points and the high performance sealed ball bearing wheels ensure the smoothest of rolls The urban intasafe z series is the quintessential travel bag about town Designed for the modern triangulatingits position using local cell towers Compatible with any cellular device:Track your luggage worldwide with any mobile device Multiple mobile devicetracking: Connect multiple cell phones to one Trakdot device or track multipledevices from one cell phone Easy locating at baggage claim: Bluetooth functionwithin the mobile application allows you to locate your luggage at baggageclaim within 30 feet Online tracking: View your luggages location history onyour PC via the Trakdot website Battery operated: Operates on two AA batteriesProduct dimension:806020mm Weighs 255g