Shipping FREE on all orders over £75 - 
The Adventurer Opti packs all the power of SteriPEN purification into a compact package. At half the size of the SteriPEN Classic models, and weighing in at just 103 grams with batteries, the Adventurer Opti is the easiest SteriPEN to take with you when you’re outdoors.
But just because it’s smaller, there is no trade off for speed, power or effectiveness here. The Adventurer Opti purifies a half-litre of water in 48 seconds, just like the bigger models – but in a smaller, lighter device. With its optional solar charging case, the Adventurer Opti will give you the freedom to go way off the grid with a nearly limitless ability to purify water in a product that’s so light and compact, you’ll hardly know you’re carrying it.
The Adventurer Opti ships with two non-rechargeable (disposable) CR123 batteries and a custom-fit neoprene pouch.
- Weight: 103g with batteries.
- Size: 6.1" high - 4.75 cubic inch volume
- Battery: Uses two CR123 batteries (included)
- Battery life: Disposable - 100 treatment; Rechargeable - 40-50 treatments