About this item UP TO 50 HOURS PLAYTIME - These wireless headphones deliver up to 50 hours of playtime on a single charge. A quick 10-minute charge gives you up to 4 hours of playtime. This wireless headset can also easily connect to non-Bluetooth devices via a 3.5 mm audio cable, plug in the included audio cable to listen for even longer in wired mode. Optimized Sound Quality with 3 EQ Modes - The headphones feature an EQ button that allows free switching among three preset EQ settings to meet the listening requirements of different music styles. Enjoy Hi-Fi sound calls with the built-in microphone, making your conversations clearer. STRONG BLUETOOTH 5.3 TECH - These wireless Bluetooth headphones are compatible with all Bluetooth-enabled devices. Advanced Bluetooth 5.3 technology provides a more stable, faster connection and can be paired with two devices at once, seamlessly switching between them. Quickly switch from listening to a playlist on your phone to taking a conference call o