... MV - Handset 1200 Mah/7.2V lithium batteriesCurrent work Phone start-up current 30 mA ~ 200mA, standby current 30 MA, Print average ... /2D Imager Barcode scanner optionalProcedures upgradeSerial download, double-Duikao, dial-up / long-distance network to downloadSpecial featuresCalling bell, the black box ...