10Pcs Green Edison Bulb LED Filament Lamp Parts DC3V DC12V LED Chip Incandescent Light Accessories Diode for Repair Bulb Tubt Bulbs，Light Bulbs

Some broken on arrival

3 volts, or two aa batteries work perfect for the voltage to power it up

These are quite bright, as i assume they were intended for permanent installation in a lightbulb-like fixture. I put a 300-ohm resistor on it and at 9 volts it is too bright to look at directly. So that's pretty good i think. They are also EXTREMELY fragile, literally cracking and crumbling from a very small amount of accidental bending. If you get these, DO NOT BEND THEM UNDER ANY CIRCUMSTANCES. Have a plan to install them in a way that keeps them safe from being put under any mechanical strain; gently glue them down, have a jig that will keep them from bending during soldering, etc. Importantly, the seller just tosses the filaments into a box with a piece of packing paper. It's better than an envelope, but still struck me as inadequate.

Products came open and broken

These are not flexible and shipped in just a plastic envelope... not surprisingly several were broken when received, they were in a box with other things. I've tried a couple and the working ones do work, they are relatively bright but are a yellowish green, not a pure LED green.