Positive points:
1) Best battery life of any headlamp that I've seen. LED lamps, low power consumption, etc. mean that it easily gets 100 hours per set of batteries.
2) Lightest, most comfortable headlamp on the market, especially for daily use and/or "in your pocket, when I need it" use.
3) Terrific as a "go put the dog out" or "reading in bed" light.

Bottom line: it's really cool; works great, can be packed away, and used as a hand lamp...get one. You'll love it.

Minor caveats:
1) There's a little warning slip in the package, but in case you miss that: to avoid unpleasant surprises, DO use two hands to take it off, so the rear pad doesn't jump off the back of your head and hit your hand.
2) It's not waterproof, and not as secure as some of the higher-end sport headlamps. Therefore, when pursuing physically vigorous activities, you may want a headlamp that is a little more secure. This is fine, however, for jogging, biking, reading in bed, etc.

Great light for occasional use (Rating: 5.00)
Review : I am a private pilot and carry this light in my flight bag. It has proven to be phenomenally useful. I highly recommend it for any situation where you need an occasional light (household use, in your car, boat, for camping, etc.) For portable, occasional use, this cannot be beat.

Fantastic For Camping And Many Other Uses! (Rating: 5.00)
Review : I purchased my first Zipka as a stocking stuffer for my husband, HOPING he would use it. It gets used all the time! Taking out the trash, in the workshop, as a book light, around the house and of course Camping! My whole family has since purchased them. The battery lasts forever and its a great way to tend the fire or cook without having to set up a lantern or other light source. Its light weight and durable too. Even my small cousins have them and they work great!

Wow- lasts forever, great product! (Rating: 5.00)
Review : This light never dies due to its LED technology. It is not extremely bright but definitely bright enough for illuminating your path at night. It is great for power outages or camping. I feel much safer walking or jogging at night in my neighborhood. Light-weight, very good attachment mechanism. This product is a major improvement compared to the standard head lamp, to the point that everybody should have one. It is a perfect gift in that it is (1) reasonable price, (2) usable by anybody, (3) sufficiently different that people are unlikely to already have it, (4) truly useful/safety feature as opposed to worthless junk that is most gifts.

Powerful + Survived Blackout 2003 (Rating: 4.00)
Review : Early this year, I was shopping for a mini book lamp. I had only two choices:
1. Zelco "itty bitty" Book Light
2. Petzel E44p Headlamp.
Researched both products. Finally, decided Petzel E44P was the one for me based on reviews and the overall product specs . I purchased two Petzel headlamps and I'm happy that I made the right choice.
Petzel:
- Small, portable and powerful
- Light, Stable, Comfortable and Powerful lamp
- Handy Utility Lamp -
- Night Reading - Excellent
- Offer great lighting when you are working in a tight spot.
- Petzel E44P became my essential survival tool during the GREAT Blackout 2003!
- Pay more - Priceless for a Rock Solid Product
- Battery Perfect Size
- Powerful LED lamp vs. standard yellow light
- Long Lasting battery - The batteries are over 6 months old and it is still going strong.

Cons: Closing the battery lid was not easy.
On/Off switch could be better.