• 【Hi-Fi High Sound Quality・Low Latency & Large Diameter 40mm】With a powerful 40mm stereo driver and an advanced Bluetooth 5.3 chip, the connection latency is reduced to as low as 0.1 seconds, providing a balanced output from bass to treble, delivering to you deep hi-fi bass and clear treble The large earmuff design enhances sound insulation, allowing you to enjoy clear sound quality quietly even in noisy environments Most suitable for listening to music, watching videos, web phone conferences, and making phone calls • 【Ultra-lightweight & Comfortable Fit・Foldable】The QT-812 wireless headphones, with an ergonomic design and expandable adjustment, ensure the earmuffs fit your head comfortably Weight: 0.22 kg, Made with high-quality PU protein leather, soft and comfortable, providing a comfortable experience as if you are not wearing earphones Even if you wear it all day, there is almost no discomfort such as feeling of pressure or stickiness Foldable design not only saves space but is also easy to carry around • 【Wireless & Wired Use】Bluetooth 5.3 technology ensures fast and stable connection with Bluetooth headsets during the audiovisual process Note: A Bluetooth transmitter is required for TVs that do not have built-in Bluetooth functionality Moreover, the wireless headphones are compatible with all Bluetooth or 3.5mm plug cable-enabled devices! It also supports TF card mode, so you can insert an SD card to listen to music (memory card supports up to 128G) • 【Easy to operate】Continuous playback for 15 hours, long standby time of 46 hours or with a 3.5mm audio cable & wired connection available: In case the battery is low, you can use the included φ3.5mm audio cable to connect it with your smartphone or tablet via a wired connection Additionally, the headset supports TF card mode Charge using the USB-C charging cable Compatible with various devices such as smartphones, tablets, computers, and TVs • 【Safety Assurance & Best Gift】Each TYUW headset passes at least 5 assay indexes: function test -> safety test -> condition test -> packing -> double check -> product output We guarantee to provide our customers with qualified products A 6-month replacement warranty is provided This headset will be a precious, thoughtful, and highly practical gift for your best friend, loved one, or even your mom! If you have any questions, please contact us