@jono84 the GBX-100 has an LCD display so it's not the same as e47's G-Shock, I find it readable in all lights and only use the backlight when it's actually too dark to read any colour screen.
Yep it's just a standard watch, doesn't require charging. It does have Bluetooth as I said above so it can give you your text messages which I imagine will reduce battery life but probably still lasts years.
The display turns off entirely when the watch isn't being worn.
@jono84 the GBX-100 has an LCD display so it's not the same as e47's G-Shock, I find it readable in all lights and only use the backlight when it's actually too dark to read any colour screen.