The present invention relates to a jar for cosmetic and pharmaceutical creams, which comprises a holding body, defining, in a single piece, an inner vessel and an outer mantle extending from the mouth of the inner vessel and ending under the bottom of the inner vessel to provide a gap encompassing the outside of the inner vessel. The headlight housing is attached to a device worn by a surgeon. The first end of the first windings and the first end of the second windings are electrically connected to each other, and the second end of the first windings and the second end of the second windings are electrically connected to the sensor chips correspondingly. The at least one flow passage delivers a flow of cooling gas toward the bucket cavity forward region. Methods include installing network elements to connection interfaces on connectors without the use of a flange or other exterior part. The method initializes an accumulator associated with the parity bits to an initial value, and for each parity bit increments the accumulator by a increment value and determines if the accumulator has overflowed.