Works very well, but is restricted to certain water…

Rating: rated 3.5 of 5 stars
Source: bought it new


Works very well, but is restricted to certain water containers due to size.


  • Lightweight
  • Treats biological contaminants


  • Requires strong batteries
  • Only fits certain bottle sizes

I really love this product.  However, it only works with certain bottle sizes.  I don't enjoy the requirement of bringing heavier bottles that will fit the pre-filter.  On the other hand, with good batteries, it lasts quite long.

It takes about 30 seconds to treat 0.5L, or about a minute for 1 L. This is fine for one person, but it eventually takes quite a while for a large group, with infrequent water sources (lots of water filtering). It requires stirring, so it's not easy like drops or a gravity filter.

I've used this product for 6 months, with dozens of days of use. All in all, it is a great product, as long as you're prepared for its drawbacks.

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