The revolutionary Stylus® combines the convenience of a penlight with
the power of a high-intensity LED. With 100,000-hour LEDs, every Stylus also
comes standard with a powerful momentary-blink and constant-on switch. Plus,
the knurled, anodized-aluminum body ensures rugged, corrosion-resistant operation.
There's even a pocket clip to help keep Stylus close, and it's waterproof
to 100 feet. Each light uses three AAAA alkaline batteries (included).