Available operating time is short, or battery life is short (INZONE H9 II)

Check the following:

• When you play games on your computer or PlayStation®5 with the headphones’ Bluetooth mode is on, the available operating time will be reduced. When you are not using a Bluetooth device such as a smartphone, press and hold the (Bluetooth) button for about 2 seconds to turn off the Bluetooth mode.
• If the headphones are not used for a long time, the rechargeable battery usage hours may be reduced. If this happens, the battery life will improve after recharging several times. To avoid over-discharge, if you store the headphones for a long time, charge the battery once every 6 months.
• It is recommended to charge in a place with an ambient temperature between 15 °C and 35 °C (59 °F - 95 °F). Efficient charging may not be possible beyond this range. If the issue persists, contact us.
• If the usage hours of the built-in rechargeable battery decrease significantly, the battery should be replaced. Go to Product Repair.