Push button LED on/off switch
Rotating cap retracts the ink cartridge
Uses one (1) common AAA cell
Over 20 hours of operation per battery
Dual LEDs rated at 100,000 lifetime hours
Comes with one blue ink and one black ink cartridge
Additional ink cartridges available
Just $19.95
Gift box packaged with a spare battery and spare ink cartridge

PilotLights.net

THE PILOT'S PEN - Professional LED writing instrument

Available now on Amazon at this link
Recent Reviews on AMAZON:
 5 out of 5:"This is a unique product among lit pens - the best out there - a 'Pro' level pen at an affordable price. Smashingly good investment if you are an idea person who gets ideas and must record them or needs to write in the dark for whatever reason." 

 5 out of 5: "I bought this for my husband for his birthday. Now I wake up at 2 am to the faint scritch scratching of the pen on paper as he writes down ideas for his to do list, dreams, and other concepts...That is way better than the other option of when he would turn on a bedside lamp, or, GOD FORBID, the ceiling light."
Ideal anytime you need to write in low light conditions
2 bright white LEDs direct light onto the writing surface
A Red Tip?

Yes, Red tinted lighting is commonly used to help preserve night vision. The Pilot's Pen comes with both clear and red color interchangeable tips
Facts & News:
Sold to the Aviation Industry for use by Pilots and Flight Crews, The Pilot's Pen is now available to everyone...

Ideal anytime you need to write in low light conditions. The LED at the tip of the pen can provide enough illumination for you to read, make notes about your strategy on a free poker game, or even write that novel you have been thinking of starting.
Replacement ink available on Amazon
Black Ink Refills - $2.95
Blue Ink Refills - $2.95