This timepiece has been loyal and close to me diving in Key Largo over 10 meters down, in long airplane rides, working in cars, hiking the hills and everything in between for about ten years. It has proven very tough, reliable and accurate with no adjustment or care needed. It's not showy and has no useless complicated dials or knobs (no knobs at all, just flush pressure points) but it tells hour and minute in analog plus month, day and date, second in digital. Press "Mode" and get memo where you can put phone numbers etc. if you have the patience; "Mode" get world time if you ever need that; "Mode" alarms, they won't wake me up but great for reminders; "Mode" timer to ring in set time as boiling eggs or get off computer and go to work; "Mode" stop watch I like that!; "Mode" to set analog hands only forward, no reverse. The light is adequate, the lens seems plastic to me (not flat) and it does scratch and the case is not metal except the base, that's right the screws and all are plastic, but it makes the watch light and a good price. The description says metal with mineral lens but it isn't. The waterproof, price, reliability, accuracy, toughness and good looks makes me want to buy another after this one. For the price why change the battery every ten years?