SteriPEN Adventurer Optisearch

SteriPEN Adventurer Opti

SteriPEN Adventurer Opti

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Portable Water Purification

There’s a reason the SteriPEN Adventurer Opti was named an Editors’ Choice by both Backpacker Magazine and Trail Runner Magazine. Small, lightweight, and easy to use, it’s built for those who need access to safe drinking water while off the grid for days, weeks, and even months at a time. The UV lamp can purify up to 8,000 liters and works in any container with a 1.4-inch or larger diameter—like a Nalgene wide-mouth 1-liter bottle. A pair of CR123 disposable batteries are included, and the purifier is also compatible with RCR123 rechargeable batteries.

Note: This drop is limited to 200 units.

SteriPEN Adventurer Opti

How It Works

For convenience on the trail, around the campsite, and anywhere you go, the Adventurer Opti uses a revolutionary optical water sensor that doubles as an integrated LED flashlight. The sensor ensures safe use and effective treatments, even in cold environments. Simply hold down the activation button for three seconds to switch on the light.

SteriPEN Adventurer Opti
SteriPEN Adventurer Opti
SteriPEN Adventurer Opti

A Closer Look


  • SteriPEN
  • Lamp life: 8,000 treatments
  • Removes 99.9% of viruses, bacteria, and protozoa
  • Tested and certified by the Water Quality Association
  • Battery: CR123 (included) or RCR123
  • Battery life, disposable: 100 x 0.5L treatments
  • Battery life, rechargeable: 80 x 0.5L treatments
  • Minimum bottle diameter: 1.4 in (3.5 cm)
  • Dimensions: 6.1 x 1.5 x 1 in (15.5 x 3.8 x 2.5 cm)
  • Weight: 3.8 oz (108 g)


  • SteriPEN 8000 lamp-activation guarantee
  • 2 disposable CR123 batteries
  • Neoprene case with belt loop
  • User guide


All orders will be shipped by Massdrop.

Estimated ship date is July 17, 2017 PT.

After the drop ends, payment will be collected and the group’s order will be submitted to the vendor up front, making all sales final. Check the discussion page for updates on your order.

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