The bag itself is well made, the magnetic mechanism works properly. However, the case for the Nokia E51 is for me a bit too big: for a mobile width of approximately 35 mm are 65mm case width to Buche.Länge and thickness are ok, but there remain collapsed more than 2 cm of air between the flap and mobile phone! The case would have been much smaller and discreet make can, on your belt it works but a bit bulky, therefore only 3 stars.