... fully sealed and easy to carry; 2). Competitive price design, high reliability 3). Built-in over voltage, ... characteristics: constant current / constant voltage mode; high precision, low noise;Hold up time: 20mS Min; 6). Environmental:Operating ... by standard pure aluminum sheet, good heat cunducting,low temperature,high material cost. 4,Key components: ... adapter for mobile phone, GPS, PDA,with CE RoHS