A simple to use device that exudes strength. Of stainless above and to the attachment system to the baggage of good quality plastic below. The strap is solid. No grinding or other flexural load despite the supported weight (maximum 50 kg - is already the result luggage ...). A clear and readable display (digits 11 mm on approximately 4.5), only one operating button. The document is also clear (available from the manufacturer's site if necessary). The device weighs 93 grams. The upper 15 cm Overall 3 cm wide. The maximum thickness is about 5 cm. It works with a CR2032 battery housed under a screw lid closed. Because perfection does not exist, count 200 to 300 grams of margin of error in the measurement to avoid surprises at the airport.