Compact design. Lightweight and very comfortable to hold, even with heavy luggage.
Easy to read scale can be viewed from above, but anyway the reading is held for one minute or can be reset at any time. I've checked its readings over the range: accuracy is very good.
The built-in webbing strap is well designed to quickly clip around any shape of luggage handle.
Battery compartment very accessible. Battery can be replaced quickly without a screwdriver.
Can't think of any ! except that the scale reading could do with a second or two additional delay time to allow weight to settle. It's a bit over-enthusiastic to hold its reading, so I would recommend taking a few additional reset readings to fully confirm your luggage weight. Often the first one is indicated as too light. Make sure that there is no tension on the weighing strap when resetting though, or you will get a false reading.
You soon get used to its quirks. After all, it's going to save you a lot of money in overweight penalty fees.
Overall: Excellent value for money, easy to use and accurate. Wouldn't be without it. A MUST to take with you, to avoid overweight bags on the return trip.