Model #T20.
Works with two AA batteries. I will include four new ones.
There is a charger with it. Model 1A84. I didn't use it, only AA.
I triggered with a remote, no damage, but I did not try on my DSLR cameras direct.
Using it on an Olympus would be prudent unless you are familiar with the flash.
The charger is 200 DC output at ten mA.
That is enough to kill a human under the right conditions.
The gist is BE AWARE, HI VOLTAGE.
Nice, compact flash, would be good for macro.
$20 and I pay shipping.
Interested and must have a picture text back here.
Bill