Item Condition Notes: Pre-owned unit that is fully functional. Charging port cover is missing (please review photos before purchasing). Does not come in original packaging.

About this item The SteriPen Ultralight is a featherweight, pen-style UV water purifier designed for thru-hikers, backpackers, and travelers who need dependable water treatment without extra pack weight.

• Brand: SteriPen
• Weight: 3 oz
• Material: Plastic
• Size: One Size
• Purification time: 90 seconds for 1L, under 60 seconds for 0.5L
• Lamp life: Rated for approximately 8,000 treatments
• Power source: USB rechargeable, roughly 20 treatments per charge
• Activation: Water-activated with automatic shutoff
• No chemicals, no altered taste

Because the purifier activates on contact with water, there's no button to forget — it simply turns on when submerged and shuts off automatically once finished, preventing wasted battery life inside your pack.

USB charging means you can top off the unit from any power bank, wall adapter, or laptop, eliminating the need to search for specialty batteries while traveling. For best purification results, use with clear water sources and pre-filter any cloudy water beforehand.

Additional information from seller This unit is sold pre-owned and does not include the original retail packaging. The charging port cover is missing, as noted above and shown in the listing photos, but the purifier remains fully functional.