Lithium battery (lithium-thionyl or LiSOCl2) brand Voltec. The "M" variant has a lower capacity, but it lends itself better to applications with higher currents, compared to the standard ER34615...

Economical bulb General Electric Biax™ S/E 4-pin F9BX/827/4P 2G7 - code 37710- with a long life, used in offices, homes and industrial/commercial spaces, in special lamps with 2G7 type clamp. ...