1. IslandWatch - thanks for an excellent buying experience. 2. The watch is not thick, big plus for me, the size is good for everyone, and the black-red contrast is very nice. However no one can tell for certain - not even the maker! - whether it has a lithium battery or not. My biggest issue with this watch is readability - the face is black and grey, so the numbers are nearly invisible, even to my sharp eyes. Marketing pics cannot render the actual (non) readibility. Lume - it's a T-100, but the watch face's lume looks like a regular T-25, the extra lume belongs to the beautiful rotating bezel. Now at night the bezel shines bright, but the bezel numbers cannot be read, they are just too small to read in the dark despite the lume embedded in them. If like me, you like the seconds hands being aligned with the minute markers, be prepared for a disappointment. A neat eye catching watch, but if you are a Traser fan like me, there are better options in their catalogue.