The CamelBak All Clear Microbiological UV Water Purifier is a very interesting concept. It saves space in your pack by incorporating UV light purification into something that you are likely to already be carrying – a water bottle.
The key to the All Clear is the cap which has a UV light source and an LCD screen. You simply fill the bottle, replace the cap, power on the cap, and then shake the bottle for 60 seconds. The LCD screen counts down the 60 seconds so you know when to stop shaking. The cap is rechargeable and CamelBak claims that you can run the purifier 80 times on a single charge. The LCD screen also keeps you up to date on the charge level of the battery.
As with other UV purifiers, this will only work with water that is already relatively clear so per-filtering is recommended. Additionally, the battery is not user replaceable, so if it loses its charge while you are in the field, you will want to have a backup purification source (which you should be carrying with any purification system).
This looks like a really slick, refined package. This is one of the few filters that could easily find a place in your EDC gear. Check out the CamelBak All Clear on CamelBak.com.