These are strange headphones. They work on infra-red wireless rather than Bluetooth so the device you are playing from needs a wireless transmitter.
- Compatible with IR transmitters for wireless audio playback
- On/off switch and volume control
- Extra foam cushioning and adjustable headband for comfortable fit
- Fits any size head, even children
- Foldable earcup design provides convenient storage options
https://www.google.com/search?q=xo+vision+head+phones
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