Although there is no documentation, none is needed. The lamps are the right color and brightness, and a good rate of flashing...more than natural, but not "Hollywood". Buy a half-dozen or so, add something leafy, and the effect is pretty damn good. I have altered mine by adding solar panels and use rechargeable batteries, for a whole summer of fireflies.
I'm so happy you're happy, Paul. I'm adding a v2 to the shop and am now on Etsy thanks to a few encouraging words from customers about branching out. You can find that store here: https://www.etsy.com/shop/ElectricArtCo.