LG Hi-Fi Plus User Manual page 14

Specifications and Features
USB Type
Voltage
Current Consumption
Earphone 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 pi
Speaker and Digital MIC
1 m Sound Pressure 60 dB ↑ (100 %) *Based on full charge
GSM/CDMA, WCDMA, LTE™
-20 °C ~ 40 °C
73.9 mm x 43.9 mm x 7.4 mm / 23.6 g