The Steripen AQ-SB-E Aqua Double Duty Water Purifier Pen is a portable water purification tool perfect for camping and hiking adventures. It purifies one liter of water with two clicks of a button. With a filter life of 6000 activations, this ultraviolet light filtration technology pen is designed to provide clean and safe drinking water on the go. In a stylish blue color, this pen is compact and easy to use, making it a convenient solution for purifying water in the field. Made by the trusted brand SteriPEN, this water purifier pen is a reliable tool for outdoor enthusiasts seeking clean hydration. Batteries are required for this device. Batteries not included.