The Casio F91W is an inexpensive quartz digital watch, manufactured by the Japanese firm Casio Computer Co., Ltd.. It was introduced in 1991. This watch is widely available throughout the world. It is widely noticeable due to its classic Casio shape. Prices vary, normally in the $7.50 – $15 range. United States intelligence officials have identified the F91W as a watch that terrorists often use when constructing time bombs.
The Daily Omnivore 
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