Vivitar DVR 740HD Camera Manual - Page 7

Initial Camera Setup Powering the Camera ON 1) Installing the Batteries Make sure the batteries have been inserted properly into your digital camera, according to the polarity shown inside the battery compartment. Use 4 x AAA (1.5v) batteries. Alkaline batteries are recommended. (Batteries not included.) Note:  Remove the batteries from the camera when not in use for an extended period.  Do not mix alkaline and non-alkaline batteries.  Some camera features (Flash) will not work if the battery power level is low.  When the battery power is low the battery icon turns red and the camera will automatically turn off a few seconds later.  The energy status of the power is displayed on LCD as shown below: Full battery power Medium battery power Low battery power 2) Installing the SD Memory Card IMPORTANT: You must use a Class 4 SD card or higher SD card only. 6