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Do not expose the earbuds or case to extreme heat or cold, which can temporarily reduce capacity and charge times. Room temperature conditions are best. Notes: if EarBuds are unable to be charged, please charge for the charging case via USB cable first(for more details, please refer the following steps).
Technically brand new, but the box has been opened to make sure the case does charge the headphones. If storing the earbuds for longer than a month, discharge them to 40-50% charge. This reduces strain on the battery from sitting at a high or low charge for prolonged periods. Recharge as needed before using again. Smart Touch Control and Wide Compatibility Run the earbuds down close to empty (0-10% left) once a month or so and then recharge fully. This helps calibrate the battery indicators.The headphones support voice assistant that can be easily accessed from them. This allows you to you control your phone with the voice assistant without actually touching the phone making your life a little easier. COMPATIBILITY
Another way to use wireless earbuds with your Kindle Fire is to connect them to a Bluetooth speaker that supports the AptX codec. This codec is designed for streaming high-quality audio over Bluetooth, and many newer Bluetooth speakers support it.
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If you have a Kindle Fire, you may be wondering how to use wireless earbuds with it. While the Kindle Fire does not have Bluetooth built-in, there are a few ways you can connect wireless earbuds to your device. Noise cancelling effectively eliminated ambient sounds, allowing users to focus on their music or calls without outside distractions seeping in. Activate call waiting facility on your cellphone.(you may refer to cellphone’s manual for more details.)