They are NOT compatible with DVDs that use original digital IR or Bluetooth technology. SIMOLIO IR headphones are compatible with most car DVD systems. SIMOLIO infrared headphones are ONLY suitable for in-car DVDs that use the universal infrared frequency (Channel A: L/2.3MHZ,R/2.8MHZ; Channel B: L/3.2MHZ,R/3.8MHZ).
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