got the replacement-bulb tessa this weekend.
It neither fits in my G2 nor my G3.
i think it's to short to reach the contact.
It fits in our old D3, a metal model.
Because the reflector-diameter is smaller than the genuine bulb, the
"tessa" unfortunatly rattles in the head.
but the output is great. White + bright + regular!!!
comparing, lumens factory items are much more highquality.