Unbranded Blue Tune 510BT Restored Tech sku-17726024438

These Unbranded Blue Restored Tech Tune 510BT headphones (sku-17726024438) have Pure Bass sound and wireless Bluetooth streaming. The source title identifies the color as Black, while this listing specifies Blue. They can switch between 2 paired devices so you can take incoming calls.

Battery life is up to 40 hours; a full recharge takes about 2 hours with the included Type-C USB cable, and a quick 5-minute charge provides roughly 2 hours of playback. A built-in microphone and ear-cup controls handle hands-free calls and sound adjustments. Press the multi-function button to access Siri or Hey Google.

The adjustable headband fits most head sizes, and the headphones fold for storage. If the fit is too tight, leave them over a ball or similar rounded object for at least 24 hours and repeat if needed. You can also adjust each earpiece until both sides sit comfortably.