The Samsung Nexus S is not an inexpensive device, so why risk damaging it with a cheap wall charger? When it comes to safely powering devices, Gomadic chargers have always stood alone. We have been in the power accessory business since 2001 and continue to innovate in power circuit design and miniaturization. Our Samsung Nexus S Travel Wall Charger is a very powerful (high wattage), very compact (measures around 2.5 inches diagonally with foldable wall plug), and very well made (backed by lifetime warranty) accessory. Top it off with our upgradeable and interchangeable Gomadic TipExchange Technology, and this will most certainly be the last charger you ever buy.