K3 has one built-in battery in the headphones.
Charging and play times
The headphones can be used for approximately 55 hours on one charge (32 hours with the ANC on).
The battery takes approximately 120 minutes to fully charge. K3 does not support quick charge.
Charging methods
K3 can be charged with a USB-C cable included in the packaging.
We recommend using the Sudio cable included in the package, however, other third-party USB-C cables may be compatible too.
Battery level indicators
Headphones (no cable inserted)
- Amber light - 0-25% battery left
- White light - 26-100% battery left
Battery life status will be indicated on your smartphone for iOS and most Android devices. Since phone manufacturers have various Android devices that work differently, you can also download various battery apps on the Google Play Store.
Headphones (with cable inserted and charging)
- Amber light - 0-99% battery charged
- White fixed light - 100% battery charged
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