... . Three LED,Brightness: over 48000mcd3. Battery: 3.6V, 40mA Ni-MHModel A: three white led lights, long press switch for ON, Undo ... press switch for ON,Undo for OFFModelC:three white led lights, Click switch for ON, Re-click switch for OFFModel D ... :three white led lights, First press switch for ON, second press for twinkling, third ...