The Welch Allyn 04700 Bulb Equivalent is a Replacement lamp for the following 2.5v Standard Paediatric (Non Fibre Optic) Laryngoscopes:

• Laryngoscopes 664 Series Size 1, 690 Series Size 1-2, 680 Series Size 0-1, 692 Series Sizes 1-2,
  634 Series Sizes 0-1, 674 Series Sizes 1.
• Obsolete Laryngoscopes Series 684 Sizes 0-1,
  694 Series Sizes 1-2