Black Wall Travel Home Charger for LG Optimus M MS690 Metro-PCS Black Wall Travel Home Charger for LG Optimus M MS690 Metro-PCS Travel Charger - Micro USB Connection. Smart IC Chip Technology to avoid overcharging. Travel Chargers provide portable power. Simply plug the charger into a wall outlet and soon your battery will be fully charged. Provides power to your phone while simultaneously charging your phone's battery. Phone not included. Non-OEM Accessory.