What They say: 

Fortify yourself in a flash with the ultracompact 1 liter Jetboil Personal Cooking System. Ideal for dehydrated meals, coffee or tea on the go, remote worksites, and emergency kits. Travel light and prep easy. The Jetboil Personal Cooking System (PCS) is a complete food and beverage multi-tool you can hold in your hand and weighs about a pound. Lights with the click of a button, and within two minutes you’ve got two cups of boiling water ready for coffee or a quick meal. Pack components, fuel and accessories into the Nalgene-sized cup for convenient transport.

1.0 Liter FluxRing® cooking cup with insulating Cargo Cozy.
Adjustable burner with push-button igniter.
Insulating drink-through lid.
Insulating measuring cup bottom.
Fuel sold separately.

Weight 425 g.
Volume 1 Liter.
Boil Time 1/2 Liter = 2 minutes.
Water Boiled 12 Liters per 100g Jetpower canister.
Dimensions 104 mm x 180 mm.

What GearGuys say:

We're happy to tip our hat to one of Australia's most accomplished mountaineers, Andrew Lock, and hear what he has to say about the Jetboil personal cooking systems:  "Jetboil is the fastest, most efficient and most reliable stove I've ever used at high altitude.  And a reliable stove really can be the difference between summiting or not."