FOR In-Flight Wireless ListeningFor travelers who want to use Bluetooth headphones with airplane seat 3.5 mm audio jacks without cables. Designed specifically for airplanes seatback screens and other 3.5 mm audio-out sources not phones or instruments. Stable Audio For Movies & TVUses a Qualcomm Bluetooth platform for reliable interference-resistant audio during long flights. When paired with aptX Adaptive headphones video and dialogue stay well aligned for movies and TV shows. Dual Headphones One SourceConnect two Bluetooth headphones at the same time to share in-flight movies or music. Audio stays synchronized between both listeners making it ideal for couples or family travel.
NOT FOR Real-Time Or Instrument UseNOT for musicians gaming live monitoring karaoke or electronic instruments. Bluetooth transmission introduces delay that makes real-time performance or rhythm-critical use unusable even though audio quality itself is stable. LIMITED Bluetooth Behavior & LatencyRelay is a transmitter only and pairs only with headphones not phones or tablets. Bluetooth must be turned off on previously paired devices to avoid auto-connection issues.
Latency depends on headphones: aptX Adaptive low delay; Standard Bluetooth 150200ms (lip-sync may be noticeable)