The Glowdoggie Ultra is a German-engineered LED lighted dog collar. It allows you to see your dog at night, at a distance. I have had my Glowdoggie collar for about 4 months now. As a professional dog trainer I have seen many, many different collars, and this collar far exceeds the run of the mill LED collar in a number of ways.
Firstly it is waterproof. I have tested this thoroughly, and it lives up to its claim of being 100% waterproof. Secondly, it is compatible with rechargeable batteries. This is a big plus if you are using an LED collar regularly. The company also guarantees their collars for 2 years. After four months of regular usage, I see literally no wear and tear on this thing, so I think it will far exceed the 2 year warrantee.
The biggest plus of these collars are the fact that they are intensely bright. With a dog off leash at over 100 yards the collar in clearly visible with no other lighting around. This is partly due to the fact that unlike many LED collars the Glowdoggie does not flash but instead remains a constant source of light. Contrary to my initial thoughts, this does not have any noticeable drain on the batteries compared to some of the other battery powered collars that flash.
All in all this is one of the best LED collars available on the market today, and comes to you, batteries included.