Medical Alert Flashlight Keychain for Jehovah’s Witnesses 

This is a Medical Alert Flashlight Keychain, rectangel shape and measures 2 1/4" X 1 1 1/4" (5.7 X 3.2 cm) with battery. This is uniquely designed for Jehovah’s Witnesses and can be of huge benefit to them at the time of medical emergency. Wording : " NO BLOOD, Jehovah's Witness No Blood Transfusion.
http://www.mjcmjc.com/misc-items/no-blood/medical-alert-flashlight-keychain.html