Opticon H19А - Manual (Page 191)

191
GPS
External Memory Card
Battery and Power
Card Slot Mini-SD card slot
Main Battery Li-Ion Polymer .V 10mAh
Talk Time  hours
Standby Time 10 hours
Battery Charing Time  hours (AC charger via mini USB)
 hours (USB cable connected to PC)
Backup Battery  minute RTC after main battery removal
18 hours RTC in main battery low power
Built-in GPS module SiRF Star III
Cold Start Time s
Warm Start Time s
Hot Start Time 10s
Reacquisition Time < 1s
Accuracy Static: m Dynamic:0m
External Antennal I/F yes