I bought this bag weighs there a month and I must say I am disappointed. It is great for luggage not exceeding 16 kg, beyond it becomes very imprecise (up to 2 kg difference). On the other hand the weight displayed on the screen does not freeze when the bag is heavy, the numbers scroll. The positives in my opinion: the device operates with 4 LR3 batteries supplied with the camera and the handle is light. In conclusion, although for heavy suitcase but otherwise not go your way.