Gem Call whistle

grabcad

A discreet pendant designed to reveal its hidden gemstone, yet secretly harbors a piercingly loud whistle within a cleverly concealed circular mouthpiece. By blowing into this hidden feature, anyone within earshot is instantly alerted to your distress signal. This dual-purpose device seamlessly blends functionality as both a whistle and a pendant, rendering it an unassuming ally in times of need.