Widely use and Easy to install: 2200K warm white LED provide a warm light glow and build the retro look of antique filament incandescent bulbs with the benefits of LED, which is widely use in indoor and outdoor string light and other lighting fixture, you just need screw it in to the E26 regular base for string lights and other E26 medium Base lamp,then you can enjoy the vintage atmosphere and comfortable warm white glow. Shatterproof and waterproof: S14 led bulbs are made of plastic materials, which is and drop ,not easy to fragile. Perfect replacement bulbs for glass incandescent bulbs of indoor and outdoor string light. Energy Saving and good heat dissipation: 1 watt LED filament light bulbs are equal to 11 watts incandescent bulb lamps,90% energy saving than the incandescent strand light bulbs, keep cool to the touch, never overheats. Warm Tips: These 3V S14 LED bulbs is only suitable for Solar String Light which must work with low voltage bulbs. Long Lifespan: 25,000 hours span up to 13 years with 5 working hours per days use, cost and energy saving.