The National Travel-Lite power supply weighs under 1 lb. and is a compact 5 3/4"L x 3 1/4"W x 1 5/8"H. It comes with a detachable cord and features a ten-turn potentiometer with a brake on the knob. This unit is great for traveling because it works in any country. It features a 110V / 220V automatic stabilizer. The power range on the Travel-Lite is 1.5V to 18.0V. It is 2 Amps. There is a 30-Day Warranty on this product.