15mm Bayonet Base Single Contact LED Bulb for Reading Lights. Description: The Bayonet Magnum Ring MKII is specially designed to replace most single 15mm bayonet base incandescent bulbs for reading lights. These US made high-flux LED bulbs produce a warm white light and are fabricated from the highest quality components to assure long life and trouble-free functioning. Their incredibly low power draw (0.1A @12V) makes them the perfect way to reduce energy consumption. High-flux LEDs, the latest LED technology, out-perform cluster LEDs in all respects. Product Features: Equivalent to a 20W incandescent beam. Spot beam, best for directional light fixtures, bright enough to read a book. Long service life. Not hot, warm to the touch. Shockproof, ultra-rugged with no filament to burn out or break. UV, lead, and mercury-free. Not recommended for use in fixtures with colored lenses. Specifications: Input Voltage: 11-15 VDC (non-polarized) Current Draw: ~0.1A @ 12V Color Temperature: ~3000 to 3800 K Shell Material: Die cast aluminum Mechanical Connection: Bayonet 15mm base Weight: ~ 75 g (2.5 oz) Heat Dissipation: Space is required to dissipate 1W of heat generated.