The Hi-Tech Lamps part number 64337B is a 48 watt (48W) current controlled halogen lamp made by Osram. It is intened to operate on a circuit providing a stable 6.6 amp current (6.6A). This lamp has a maximum overall length of 45.6mm. It is a MR16 bulb with a LEADS-B base. The average rated lifetime of this lamp is 3000 hours. This lamp is also known as Osram 6.6A/48MR16/64337B LL IRC and 58906.