Uniden BTSC1100 Owner's Manual page 14

Specifications
Receiver Sensitivity
Continuous Talk Time
Stand-by Time
Weight
Dimension
Charging Voltage
Charging Time
Operating Temperature
Storage Temperature
Battery Lithium Polymer
14
-80 dBm / 0.1% BER
10 Hours
400 Hours
65g
51.2 mm (W) X 112.9 mm (H) X 15.7 mm (D)
DC 5.0V
MAX 3 Hours
-20° to +70°C
-40° to +85°C
3.7V 600mAH