LG Hi-Fi Plus User Manual page 12

Specifications and Features
USB Type
Voltage
Current Consumption
Headphone Jack
Audio
Sound Pressure
Antenna
Operating Temperature
Dimensions/Weight
12
USB 2.0 (Type-C)
5 V ± 10%
220 mA (with earphone jack), 3 mA (without earphone jack)
4 Pole / 3 Pole 3.5 mm
Speaker and digital MIC
1 m sound pressure 60 dB ↑ (100%)
*based on a full charge
GSM/CDMA, WCDMA, LTE™
-20 °C – 40 °C
73.9 mm x 43.9 mm x 7.4 mm / 23.6 g