Safe drinking water on your local and global adventures!


The SteriPEN Adventurer Opti provides water purification that is perfect for occasional travel, multiple day hikes, and home emergency kits – the UV lamp lasts for up to 8,000L of water purification.


The rugged design and construction trusted by thousands of endurance athletes. Adventurer Opti™ is powered by two CR123 batteries making it a lightweight water purification system and keeping it operating effectively in even cold environments. 


It's very easy to use, just press the button, place in your water, and stir! 


The revolutionary optical water sensor doubles as an integrated LED flashlight for added convenience on the trail or around the campsite. Hold down the activation button for three seconds to illuminate the darkness. • Ultraviolet (UV-C) light rays safely purify clear water by destroying 99.9% of protozoa (including Giardia and Cryptosporidia), bacteria and even viruses. • When the treatment is complete, LED indicators flash to let you know that the water is safe to drink. • Use only on clear water, as cloudy, sediment-laden water hinders effectiveness.


Additional Information


Weight: 2.9 oz

Dimensions: 7.6 x 1.5 x 1.5

Lamp Life :   3,000 treatments

Battery: 4 AA batteries – Alkaline, Lithium or Rechargeable NiMH (Not included with purchase)

Battery Life: Alkaline: 100 treatments (16oz./0.5L) or 50 treatments (32oz./1L), Lithium Disposable: 300 treatments (17oz./0.5L) or 150 treatments (32oz./1L), NiMH: 200 treatments (16oz./0.5L) or 100 treatments (32oz./1L).

Minimum Bottle Diameter: 22mm - A.K.A any Dawny Cooler


SteriPEN Adventurer Opti

  • Due to the nature of this product, the Dawny Adventure Club can't accept any change of mind returns. We will only accept returns and give full refund if the product provided is faulty. 

  • $7.00 tracked. As we don't hold stock, steripens will take up to 5 - 7 days nationwide shipping (rural addresses may take up to 10 working days).