https://www.defenderring.com/
Defender Ring™ is a first of its kind self defense ring developed exclusively for women who want protection but don’t want to sacrifice style and comfort. The ring’s design is clean, minimal, and can be worn everyday by moms, young professionals, joggers, and any woman seeking personal protection. The dual-purposed jewelry can be transformed into a sharp, hand-mounted self defense blade weapon in under 1 second