The M91 - 12v 10w G4 is classified as a Halogen Light Bulb. The M91 - 12v 10w G4 is manufactured by Osram|Philips|GE with a G4 cap.
BEW Direct - M91 12v 10W Capsule Lamp G4 Cap
12v 10w G4 Halogen Capsule Lamp
Halogen Capsule Bulbs with G9, G4, G6.35 and GY6.35 caps
Osram, 4058075 094178
Halogen Capsule LampVolts: 12Watts: 10Cap: G4Rated lamp life (hrs): 3000Items in stock will be despatched within 48hrs (except over weekends).
Halogen Capsule 12v 10w G4 M91
G4 10W Dimmable Halogen Capsule
Base: G4 (M91), 2-pin. 10 X Halogen Bulbs. Color Temperature: Warm white (actually resemble orange), 2800K.
10 x Halogen Light Bulb 20W 20 Watt 12V G4 Base JC Type 5956413
Buy BELL 10W Halogen Capsule G4 M91 2700K Lamp from £1.99
Buy Status 20W Dimmable 12V G4 Halogen Capsule Bulb Clear (34w Equiv) from £1.99
Radium M91 10W 12V G4 Halogen
Osram Halogen G4 10W 12V Dim Axial 2800K M91