... Bellcore GR196 file format in writing or reading ο Built-in lithium battery with high capacity for over 8 hours of operating life ... power meter ο Universal FC/PC,FC/SC,FC/ST connector type, it's convenient for surface cleaning ο Unique function of updating ... , 50/60Hz, 1.5A DC:19V±2V(2A) Built-in Lithium battery: 4400mAh, operating time ≥8 hours 2LanguageUser selectable: simplified Chinese, English ...