One bullet on the Volas Portable USB Rechargeable Bladeless Mini Fan says whisper-quiet performance for work and sleep. Aim it at the space you occupy.
It is not listed as a whole-room cooler or a ceiling-fan replacement. No decibel rating or sleep timer is published. Charge it before you rely on it through a work block or overnight, because runtime is not listed.
Open the Volas mini fan listing and choose a colour.