This appears to be a nicely-crafted bracelet of sturdy gold links like any other bracelet to which small charms and mementos are attached. But when the wielder slides the bracelet around the blade or haft of a weapon, and speaks the command word engraved on the bracelet's clasp, the weapon disappears and a charm matching the weapon appears on the bracelet. Thereafter, when the user speaks the command word any weapon of their choice on the bracelet magically appears in their hand and the bracelet disappears.
The bracelet can hold up to four weapons/charms this way. These can be normal or magical weapons, but shields and miscellaneous equipment cannot be held in this fashion. The change from bracelet to weapon is a bonus action.
If the weapon held in the bracelet's enchantment is called on, and wielded, and then lost, the character cannot call on another weapon from the bracelet. The bracelet itself a part of the weapon. The character must retrieve the weapon first, and only then can he use its magic. A weapon can be taken out of the bracelet's array. When a character wishes to do this, he takes the bracelet off his wrist and speaks the name of the weapon, and then says the command word. If a weapon is broken, the bracelet isn't, rather the user needs to call forth the bracelet, then separate the broken weapon from it. Quivers are not magically replenished when they're the size of charms. However many arrows are in the quiver when it becomes a charm are still in it when it becomes a quiver again. Likewise, a broken bow-string stays broken.
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