: Users can save up to 12-18 files internally, with the option to expand storage to 250+ files using an SD card .
AC (110/220V) or built-in rechargeable 14.4V lithium battery (approx. 2 hours of continuous recording).
4th intercostal space at the right border of the sternum.
The 1103G uses a rechargeable Li-ion battery (often 14.4V). Plug the unit into an AC power source for the first use to charge the battery completely. 2.3 Loading Recording Paper Open the recorder cover.
