Are these lights safe to leave outside in the rain?

Yes. They are wet-rated, so they are built for permanent outdoor exposure, including rain and sprinklers. Keep the plug and any connections off the ground or in a covered outlet.

Can I dim these string lights?

They are dimmable, but only with a compatible LED dimmer. A standard incandescent dimmer may cause flicker or buzzing, so check the dimmer's LED rating first.

How many bulbs and how long is the strand?

The strand is 50 feet with 27 multicolor LED bulbs at about 1 watt each. That works out to roughly 22 inches between bulbs.

Can I connect multiple strands end to end?

The listing does not state an end-to-end connect rating, so treat each 50-foot strand as a standalone run. For longer spans, plan separate outlets or a splitter rather than chaining many sets.

Do they give off warm white light?

No. These are multicolor LEDs, so they produce colored light rather than a warm white glow. If you want a soft white look, a single-color white strand is the better fit.