Specifications:
- 2000mah battery
- Voltage: 3.0V-7.5V
- Wattage: 6.0W-40.0W
- Spring loaded 510 pin
- On/Off Switch on base
- Micro-USB charging port
- Resistance: down to 0.3ohm
- Battery Level Indicator
- 15 sec cutoff timer
Specifications:
I've had the same unit for over 3 years with no problems. The only complaint I have is the discoloration from the oil of your skin over time.