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	SteriPEN Classic Portable UV Water Purifier	SteriPEN Freedom Portable UV Water Purifier	SteriPEN Adventurer Opti Portable UV Water Purifier	SteriPEN Ultra Portable UV Water Purifier
Price	$69.95	$119.95	$89.95	$99.95
Weight (grams)	156	74	108	140
Short Description	This simple and ultralight purifier provides safe drinking water with a minimum of fuss. The SteriPEN uses ultraviolet light to destroy viruses, bacteria and protozoa. There are no chemicals that leave an aftertaste in the water. It's a perfect choice for backpacking, hiking or traveling. For domestic and International backpacking, camping and hiking, Classic is ALWAYS a good choice for your portable water purification needs.	The world’s smallest, lightest UV water purifier •  Sleek enough for a restaurant, rugged enough for Everest •  USB-rechargeable from a computer, outlet or solar panel •  Buttonless, instant-on water detection technology	The AdventurerOpti, uses a revolutionary optical eye to sense the water. The patent-pending technology ensures safe use and provides purification in even the coldest of waters. When camping, backpacking & hiking, if you won't have access to the power grid for several days a time, Adventurer Opti is the product for you.	Meet Ultra, the device that smiles back! Ultra is the most advanced UV water purifer in the world. Rechargeable for up to 8,000 liters, Ultra will deliver around 50 liters of UV purification before needing to power up. Redesigned firmware and interface deliver the fastest, most seamless user experience ever!
Battery Life	Lithium Disposable: 200 treatments (16oz./0.5L), NiMH: 200 treatments; Alkaline & NiCd not recommended.	Full charge treats 20 1 Liter treatments or 40 1/2 Liter treatments	Disposable -- 100 treatments (16oz./0.5L) Rechargeable -- 40-50 treatments (32 oz./1 L)	Up to 50 treatments per charge
Dimensions	7.6"|19.3cm (L) X 1.5"|3.8cm (W) X 1.5"|3.8cm (H)	13 cm x 3.5 cm x 2.2 cm (5.1 in. x 1.4 in. x 0.8 in.)	6.1"|15.5cm (L) x 1.5"|3.3cm(W) x 1"| 2.2cm (H)	18.6cm x 4.1cm x 3.2 cm (7.3 x 1.6 x 1.3 in.)
Battery Type	AA Lithium	Internal Lithium Rechargeable	CR123 or RCR123	Internal Lithium Rechargeable
UV Lamp Life	8,000 Treatments	8,000 Treatments	8,000 Treatments	8,000 Treatments
Filter Compatibility	Tapered End (PreFilter and FitsAll)	Non-Tapered End (FitsAll Only)	Non-Tapered End (FitsAll Only)	Tapered End (PreFilter and FitsAll)
Minimum Bottle Diameter	20mm (0.8 inches)	30mm (1.2 inches)	35mm (1.4 inches)	20mm (0.8 inches)
Batteries Included In Purchase?	No	Yes	Yes	Yes
Weight With Batteries	156 grams	074 grams	103 grams	140 grams

	SteriPEN Traveler Portable UV Water Purifier	SteriPEN Defender Military UV Water Purifier	SteriPEN Sidewinder Portable UV Water Purifier	SteriPEN Emergency Portable UV Water Purifier
Price	$49.95	$129.95	$99.95	$49.95
Weight (grams)	156	156	471	156
Short Description	Travel well. SteriPEN eliminates 99.9% of bacteria, viruses and protozoa that cause Traveler’s Diarrhea. Disinfect fresh (non-salt) water or bottled water in any country. Features tapered neck and 16oz or 32 oz volume selection. UV lamp provides 3,000 treatments. WQA approved.	Defender destroys over 99.9% of bacteria, viruses and protozoa, including cryptosporidium and giardia…and does it quickly, a liter of water in just 90 seconds. And Defender is always ready, no pumping, no warming up, no filters, no testing, no waiting.	Crank it up! This eco-friendly, portable UV water purifier requires no batteries to purify 1L of water in 90 seconds. The 8,000-dose UV light destroys viruses, bacteria and protozoa. Includes BPA-Free bottle and Pre-Filter. Hand powered and perfect for campers or emergency use.v	Be Prepared. Versatile UV water purifier offers tapered end to disinfect water in various containers. UV lamp treats up to 3,000 liters.
Battery Life	Lithium Disposable: 200 treatments (16oz./0.5L), NiMH: 200 treatments; Alkaline & NiCd not recommended.	Lithium Disposable: 200 treatments (16oz./0.5L), NiMH: 200 treatments; Alkaline & NiCd not recommended.	No batteries required	Lithium Disposable: 200 treatments (16oz./0.5L), NiMH: 200 treatments; Alkaline & NiCd not recommended.
Dimensions	7.6"|19.3cm (L) X 1.5"|3.8cm (W) X 1.5"|3.8cm (H)	7.6"|19.3cm (L) X 1.5"|3.8cm (W) X 1.5"|3.8cm (H)	21.8 cm x 14 cm x 9.7 cm (8.6 in. x 5.5 in. x 3.8 in.)	7.6"|19.3 cm (L) X 1.5"| 3.8 cm (W) X 1.5"| 3.8 cm (H)
Battery Type	AA Lithium	AA Lithium	None Required	AA Lithium
UV Lamp Life	3,000 Treatments	8,000 Treatments	8,000 Treatments	3,000 Treatments
Filter Compatibility	Tapered End (PreFilter and FitsAll)	Tapered End (PreFilter and FitsAll)	Tapered End (PreFilter and FitsAll)	Tapered End (PreFilter and FitsAll)
Minimum Bottle Diameter	20mm (0.8 inches)	20mm (0.8 inches)	Not Applicable	20mm (0.8 inches)
Batteries Included In Purchase?	No	Yes	No	No
Weight With Batteries	156 grams	156 grams	471 grams	156 grams

Similar Models: Classic, Traveler, Emergency & Defender are the same device just targeted to different needs with just a few variances. UV lamp on the Classic & Defender lasts 8,000 treatments while Traveler & Emergency lasts 3,000 treatments (noted below). The Classic comes with AA Lithium batteries included, while Traveler & Emergency do not come included with batteries. Classic now comes included with a pre-filter, while Traveler, Emergency & Defender do not. We are asked this a lot so we have added this info to make your selection easier.

Military Products: The SteriPEN Defender is the same product, same materials as the SteriPEN Classic. Only difference is Defender is assembled in the United States. Protector Opti is the same device and materials as Adventurer Opti.