5-in-1 multifunctional water filter provides you more convenience during outdoor activities. Features: 5 stages of filtering system for efficient filtration. Safe and easy to drink water from any source,like creeks,streams,etc. Purify up to 2,000 liters of water, down to 0.01 microns. Fast flow rate of 200ml-400ml per minute. Food grade material,safe and durable to use. Press the bottom switch to take out hidden fire starter and mini knife,help you to make a fire easily. Built-in a whistle,which can be heard by rescuers from a far distance. Compass helps you get the right way to destination. Comes with a sack for easy storage and transport. Connect well your water bottle and the removable filter element with silicone connecting ring,which helps to clean the filter element easily. Perfect for outdoor adventure, emergency preparedness, camping, hiking, backpacking, etc. Specification: Filter material: Food graded ABS + Hollow fiber ultrafiltration membrane + Carbon fiber + KDF + Activated Carbon Straw material: Food grade silicone Filter Capacity: 1000-2000L (depending on the water quality varies) Flow rate: 200-400ml/min (depending on the water quality varies) Filter accuracy: 0.01 micron (minimum) Filtration system size: 8 * 4.5 * 15.5 cm / 3.1 * * 1.8 * 6.1 in Inlet pipe: 80 cm / 31.5 in (not include pre-filter) Outlet pipe: 18 cm / 7.1 in Packaeg size: 20 * 9 * 6 cm / 7.9 * 3.5 * 2.2 in Package weight: approx. 252.1 g / 8.9 oz Package List: 1* Water Filtration System (built-in a replaceable filter element) 1* Inlet Pipe (with a floater and a pre-filter) 1* Outlet Pipe 1* Silicone Connecting Ring 1* Storage Bag