Casio's new calculator watches will take you back to 6th grade math class

Casio has released an updated version of its classic calculator watch, featuring green text on a negative LCD and original font keypads. The watch performs basic calculations, includes functions like dual time and alarm, and is water-resistant. It runs for up to five years on a single battery and uses eco-friendly bio-based resin for the band. Available in three colors, the new Casio calculator watch costs $35.95.