The stealthy, and ultralight PURE+ REALTREE® is a full featured UV purifier offering 99.9% elimination of bacteria, viruses, and protozoa. Designed for the sportsman, its compact and durable design is water resistant and a great compliment to your REALTREE® gear. This UV Purifier is easy to use and features a 5,000 treatment lamp capable of treating up to 2500 liters of water. Put the power of UV light in your pocket and have safe drinking water anywhere. PURE+ REALTREE features an internal, USB-rechargeable battery that allows you to power up just about anywhere: from a wall outlet, a computer, or a portable solar panel.