Sentinel, crafted from brass using CNC machining, is a modern interpretation of a classic safety essential: an emergency whistle. Inspired by the elegant curves and versatility of a carabiner, Sentinel merges fashion and utility, crafting an unobtrusive accessory that effortlessly complements daily attire.  Whether hanging from a bag, belt loop, or worn as a pendant, Sentinel embodies a refined approach to personal safety, offering a discreet yet powerful solution.