Note: Only the Jasper Keychain, and Jasper Ballpoint take these AG3 batteries.
So you've got the tiny Jasper Keynote or the dinky Jasper Ballpoint, but do you have a backup plan for when your batteries run out? Well fear not - your problems are solved!

A set of 3 (hey, that's the number of batteries needed by the Jasper Keychain and Jasper Ballpoint!) AG3 batteries will juice up your Jasper and pronto! Get 'em here when you order your Keychain or Ballpoint, or just come back later when you need 'em.