... 900mAhVoltage: 3.2V (Red LED ring)/3.7V (Half Red/Half Blue LED ring)/4.2V (Blue LED ring)Best match: eGo T ... *Press the switch button for 5 quick clicks, the LED ring will turn from red to half red half blue ... 7V.*Press the button for another 5 quick clicks, the LED ring will turn from half red half blue to blue ... to 4.2V.*Give another 5 quick clicks, the LED ring will turn from blue back to red and volt ...