PENTEL EnerGel Gel Ink Refill 0.4mm Black XLRN4-A, Set of 3

Excellent watch, keeps good time, glows at night, it's a shame it's not mechanical. I ordered a mechanical one, but they tricked me out of it, supposedly there was a problem with tax payment at customs...

Everything is good, but the only downside is opening the back cover; it doesn't have a tab, the tool slips and scratches the cover👈