User's Manual
6
Charging the battery
• Fully charge the battery when using for the first time.
• When the rechargeable battery is running low, the product will beep through the headphones, and an indicator lamp 
will flash in red. In this case, charge the battery.
• It takes about 3.5 hours maximum to charge the battery fully. (This time may vary depending on usage conditions.)
• While charging the battery, the product’s Bluetooth connection remains disabled and therefore the product cannot be 
used.
1.  Connect the included USB charging cable (micro USB Type-C side) to the battery jack.
• The included USB charging cable is designed for exclusive use with the product. Do not use other cables to charge 
the product.
• When inserting the USB charging cable into the USB port or battery jack, insert it directly (horizontally).
2.  Connect the included USB charging cable (USB Type-A side) to the computer to start charging.
• While charging, the indicator lamp lights as follows (it may take several seconds for the indicator lamp to light). 
Lit in red : Charging 
O  : Charging complete
3.  When charging is complete, disconnect the USB charging cable (USB Type-A side) from the computer.
4.  Disconnect the USB charging cable (micro USB Type-C side) from the product’s battery jack.
• If you start to charge while the product is on, it will turn off while charging. When you disconnect the USB 
charging cable (USB-type-A side) from the computer after charging is complete, the product will turn off.
• When charging, make sure to use the included USB charging cable.
• The product may not charge with cables other than the included USB charging cable.
USB port
Computer
USB Type-A
USB charging cable
(included)
Micro USB Type-C
Battery jack










