Bluetooth V4.2 Technology: AH3 is equipped with chipset CSR64215 and realizes high-speed transmission (2.5 times) & large data capacity (10 times); Bluetooth signal will not be able to connect and track positioning if you were not permitted, provide privacy rights protection /safety for users.
No Lip Sync Delay & APT-X Low Latency: Features of APTX LOW LATENCY technology, our wireless Bluetooth headphones can realize sound and conversation in sync level. Ausdom Bluetooth Headphones support mini audio delay of 32-40ms (Non-detectable by human ear) for TV/PC video, providing fluent music enjoyment and superb lag-free audio experience. 
Money Saving & Environmental Protection: A SEPARATE transmitter is needed for normal wireless headphones without Bluetooth-equipped function, so you need to purchase (Transmitter + Headset) so as to reach the equal premium bass and clear treble audio/sound quality effect with our Bluetooth 4.2 apt-x low latency headset (NO need transmitter). Too many accessories will also occupy your free space. Ausdom foldable Bluetooth headphone at a lower price & environmental features meet your needs.
Comfort Wearing Experience & Hi-Fi Stereo: Feature with wireless & wired two modes (3.5mm AUX cable), mutual switch in seconds and swift pair your Bluetooth devices. Soft and luxurious soundproof ear pads & foldable adjustable headband, providing lasting comfort, extra lightweight (205 g), no harmful/press on ears. 40mm driver and noise isolating mic allow you to enjoy gorgeous deep bass / Hi-Fi stereo sound feast. (NOTE: Separate transmitter NEEDED if your TV is not Bluetooth- equipped)
Strong Compatibility: Smart Bluetooth tv/gaming headphones can auto-reconnect to any known device easily. Compatible with most Bluetooth devices: Bluetooth TV, PC, laptop, iPhone, iPod, iPad, Samsung, Android devices etc.