Single  Red LED on keychain


After playing with this, I found I can put the keyring on my middle finger and turn the light on one-handed.  I can wear it like a ring, and not have to keep it in a pocket when using it.
The keyring may or may not fit your finger, (it is pretty decent size though, id=21mm), but if you put in on a ring that does fit, it is mighty convenient!  Even over gloves!

I have also stuck a little circle of velcro on it and stuck it to my laptop to use as a laptop light.   it works nicely there too.
How many uses for these can you find?
These are really nice!  Unlike most of the tiny LED lights on keyrings. These have both a press on-release off switch  AND an on-off button so that they can remain on while you do other things.  The led is has a medium brightness.  I am finding these very useful around my observing site. 

Buy a bunch; give them to your friends!

In my tests, the battery lasted over 100 hours (continuous usage).  The battery can be replaced (4 screws) and it takes a CR3032 3V lithium battery.  These are very common.  This isn't a "throwaway" item.

 

one keychain $4 includes US shipping
5 keychains $15 includes US shipping.
 

  Flashing red LEDs with 9 volt battery connections
When at a public starparty there is a real risk of someone tripping over your tripod or equipment box.  When I have been alone I have tripped over my own equipment as you may well have.  This blinking red led is attached to a 9 volt battery connector. It will flash for months if needed on a single battery.  The connection will actually work from 3 volts to 9 volts, but it comes set up for a standard 9 volt battery.  Buy a few for using as a warning device.  $1 shipping is required no matter how many you buy.  The devices cost $0.80 each.  (Because I am just an amateur, the turned on LED in my picture looks white.  It is not, it is red. )

$1.00 shipping in the US is added no matter how many you purchase.  Each 9volt flashing red led set up costs $0.80.  Ask for shipping costs to foreign countries.
Three LED Red Head Lamp has plenty of uses!

This three red LED  flashlight is the most versatile one on the market.

This flashlight comes complete with:

Bright 3 RED LED flashlight.  While I use a 1 red led flashlight for reading charts, I have found that to be insufficient for uses such as setting up and tearing down the telescope setup, or seaching for things around the telescope setup without using white light.  This setup is perfect for those situations.   I  wouldn't be caught out without it.

Headstrap

3 AAA batteries are included

Note: These have been sitting in inventory for several years.  I can no longer guarantee the batteries included work at full power.  I have reduced the price by $3 to reflect this. 

  • Weighs 4.4 oz with the 3 AAA batteries installed
  • headstrap is comfortable and convenient for setting up/working with telescope
  • Flashlight can be clipped anywhere (jacket pocket, sleeve cuff, belt)
  • Use as a regular red led flashlight unclipped
  • Clip is on ball swivel so the flashlight aim can be adjusted

While supplies last, $7 +$3 shipping