This watch is built like a german tank! The 50mm dial along with the 17mm dial width makes this a watch for a big man. Yet is so comfortable and natural feeling. But you know you have a substantial watch on your wrist. Now the lume!! The LUME!! Its amazing with the other versions the Lume is great. But this version the lume is from another world!! It lasts forever and it is so so bright. The movement is a ne20 and it sure lasts forever. It has a power reserve that lasts a full 3 days sometimes four. I'm so happy I bought this watch. I wont tell you what I payed for it but let me tell you it's worth every penny. You could charge 1000 and I buy it again. Do yourself a favor and buy this watch now!