• 【Hi-Fi High Fidelity・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, offering you deep hi-fi bass and clear treble The large earmuff design enhances sound insulation, allowing you to enjoy clear sound quality even in noisy environments It is most suitable for listening to music, watching videos, making a web call conference, and making calls • 【Ultra-lightweight & Comfortable Fit & Foldable】The QT-812 wireless headphones combine ergonomic design and adjustable stretch to ensure the earmuffs fit your head comfortably Weight 0.22 kg, uses high-quality PU protein leather, soft and comfortable, providing a comfortable experience like not wearing earphones Even when worn 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 headset during the auditory 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 to 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 makes a valuable, thoughtful, and highly practical gift for your best friend, loved one, or even your mom! If you have any questions, please contact us