This 100-watt T4 halogen bulb security light bulb is ideal for enclosed outdoor home and commercial security fixtures. Turn your garden and walkways into well-lit, inviting outdoor spaces that create peace of mind with this versatile, 1650-lumen outdoor bulb.Features a Bipin base. Just by flipping the switch, your landscape is at full brightness. No slow starting or waiting. Philips reuses as much glass and packaging material as possible, reducing environmental impact. This energy-saving bulb has an estimated annual energy cost of $12.05 (based on three hours/day). This product ships as a single bulb.