Charms are around 25mm x 25mm (about the size of a bottle cap), 100% copper with nickel electroplating for durability. Because nickel can cause allergies, charms are not intended for prolonged skin contact and we don't recommend them for people with a nickel allergy.
Attach the cuff to the tubing just below where the earpieces branch, then clip on the charm. Correctly positioned, they don't interfere with auscultation.
You can clip multiple charms, or attach the charm to bags or keys with the included ring. Check with your workplace if you work in a high-risk area.
