Headphones; Apparatus and instruments for conveying, distributing, transforming, storing, regulating or controlling electric current; Battery power supplies for medical ventilators; DC/AC power converters; Ear phones; Headsets for cellular or mobile phones; Headsets for virtual reality games; Power supplies; Power supply connectors and adaptors for use with portable electronic devices; Renewable battery system to provide backup power; Uninterruptible electrical power supplies; Virtual reality...