All bulbs in this box worked. Each bulb is smaller than a regular bulb, which is what I wanted. No base. It has an ordinary E26 base, only the bulb is smaller. This makes it ideal for small table lamps and the like. They also have warm white light. Not yellowish, but white. I can't confirm durability yet. But if they match most LED bulbs, they should work just fine. I've had some LEDs for a few years or more that glow every day and don't get hot or burn out. Very happy with these pears. And yes, I definitely recommend them. Save money, save energy.