Walkie-talkie earphone air duct accessories sold separately. High-end detachable air duct accessories. Duct

Walkie-talkie earphone air duct accessories sold separately. High-end detachable air duct accessories. Duct Category: Headphones Item number: Air duct earphone accessories Brand: Mtlolamax Frequency range: 1.5km-3km(3km) Theoretical Communication Distance: 5km-10km Battery type: No batteries required Is it a patented product?: No Main sales regions: Southeast Asia;North America;Northeast Asia;Middle East;Domestic e-commerce;Other Battery capacity: 0 Network type: Radio network Function: Anti-interference

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