content: I bought this 12-candle pack for Christmas decor and I'm really satisfied with product quality. Flame effect is life-like, I put on a frosted-glass votive and flickering effect is amazing!!! Uses CR2032 lithium batteries, best battery for LEDs, as we know, LED uses few amperage, not drain your batteries like a conventional bulb, so battery can last for years....I'll buy 4 packs more!