External power supply External power supply is different depends on model, please check before purchase. Overseas sales dept: +82-1644-3526Domestic sales dept: +82-1644-3526 +82-1644-3526 Related Products Band(Silicon)Temporary charger on discharging of battery product Band(Urethane B)Temporary charger on discharging of battery product Band(Urethane A)Temporary charger on discharging of battery product