Isobrite ISO303 Valor Series Black/Yellow T100 Tritium Watch T100 makes this watch up to 4 times brighter than a Luminox or Traser T100 illumination lasts up to 50 years, which is double the life of a standard T25 tritium watch T100 represents the latest technology in tritium watches and makes seeing the time in the dark much easier on the eyes Ultra lightweight carbon-fiber reinforced case combined with scratch resistant sapphire crystal You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!