Victorinox CheckSmart Luggage Tracker Luggage Location Mobile Alert System (Red) 0.75"w x 3"h x 2.25"d (1.9w x 7.6h x 5.7d cm) 3.5 oz / 85 grams (with batteries) Get peace of mind knowing where your checked luggage is the instant you land at your destination Works globally with most mobile phones (excludes countries where Global System for Mobile Communications (GSM) does not function such as Japan and South Korea) Notifications can be requested as text messages and/or emails First year of service included; years two and beyond require an annual service fee of US $19.95* FAA compliant. | Two AA Batteries are included