Osram 64570 800W R7s halogen bulb

Halogen studio lamp, 800 W From their designs, halogen mains voltage lamps can be categorized as single-ended and double-ended lamps. Depending on the application, they are designed to operate on 230 V, 240 V or 120 V.
The color temperature of the lamps varies according to the application: 3,400 K for maximum luminous efficacy, 3,200 K for professional film and TV work, 3,000 K or 2,900 K for applications where long life is important.

Safety
To prevent personal injury or damage to property, halogen lamps may only be operated in suitable luminairesdesigned with suitable mechanisms (protective shields, grids, etc.) to ensure that in the event of a lamp bursting no parts/shards can escape and that during operation no ultraviolet radiation can escape. There must also be a warning sign to indicate that the lamps give off high levels of heat. Detailed information is available on request.