5pcs 2.4v (0.5A), P13.5s Bayonet-Base (Single Contact) Flashlight Lamps, G3.5 Shape.
P13.5s, Bayonet-Base Miniature Bulb (commonly used in 2-cell flashlights).
Bulb Specifications:
Base: P13.5s (Miniature Bayonet Base ~13.5mm, Single Contact),
Glass: G3.5 / G3-1/2 Clear ('Globe' Shape ~7/16" / ~11mm),
Volt: 2.4v DC,
Amp: 0.5A,
Watt: 1.2w,
Overall Length: ~15/16" / ~23.8mm,