Multilayer Dry And Wet Separation Sections Waterproof Up to 17″ Laptop Backpack

The 40mm big speaker delivers real sound and makes your ears impressedBluetooth 5.0 technology, rhythm wireless, listen to good sound anytime, anywhereHighly recognizable button control, one-handed operation, compact and light, easy to carryBuilt-in lithium batteryWith a 3.5mm audio cable, it can be used as a wired headset (when the 3.5mm audio cable is inserted, the Bluetooth is automatically turned off))