The bulb string lights outdoors emit a warm glow which makes you feel cosy and have a relaxing time in your outdoor space after a whole day's work. Made of durable flexible cord and clear glass bulbs, The G40 bulb string lights are designed to withstand extreme hot or cold temperatures through summer and winter. You can connect up to 20 strands end to end, so just feel free to customize your arrangements. These commercial outside lights are compatible with a dimmer(not including a dimmer) perfectly to dim the brightness. Designed with E12 candelabra socket base. The power of each G40 clear globe bulb is 1W equivalent to 5 Watt incandescent light bulb, reducing 90% energy but more bright. Long lifespans last 30,000 hours and can reduce maintenance costs on changing bulbs frequently.