LG Tone Free Fit TONE-DTF7Q Owner's Manual page 28

Operation temperature
Operation humidity
Dimensions (mm) /
Weight (g)
Frequency
Duration of use may vary depending on the connected mobile device, features being used, settings, signal strength,
operating temperature, frequency band, and other methods of use.
28
0 °C ~ +40 °C
5 % ~ 60 %
Earbud: 24.8 mm (W) X 23.5 mm (L) X 26.7 mm (H) / 5.95 g (One earbud)
Charging case: 65.5 mm (W) X 51.9 mm (L) X 32.7 mm (H) / 43 g
2402 MHz ~ 2480 MHz