Vintage Sleep Sound by Invento white noise Model 500

This is a vintage Sleep Sound by Invento white noise sound machine, Model 500. It is a fan-based white noise machine designed to mask disruptive sounds and aid sleep or concentration. The device generates a soothing sound of rushing air using an electric motor and an asymmetrical fan inside an adjustable acoustic housing. The design creates ambient noise without the annoyance of actual moving air. Preowned Pickup is 58th and 7th ave in midtown Manhattan