I thought the earpieces would be touch sensitive throughout, but that doesn’t seem to be the case. There is only a tiny area near the LED indicator on the earpiece that works when touched. As a result, some of the functions you need may not work. This means that you can touch an area that is not intended to be a touch area for operation, and no functions will be activated. The charger has a capacity of 315 mAh. During charging, the LEDs on the front of the case flash one after the other. When charging is complete, all four LEDs light up. After a full charge, the earbuds provide six hours of playtime, and the charger can recharge power to the earbuds up to three times. When the battery is low, the annoying voice prompt sounds about once a minute until you put the earphones back in the case to recharge. The Tozo A2 Mini wireless earbuds use Bluetooth 5.3 technology. They support standard profiles like HSP, HFP, A2DP, and AVRCP, and offer high transmission speed and a low-latency listening experience. They also have a one-step pairing feature: just take the earbuds out of the case and they will automatically pair with each other. There’s just one simple thing you need to do: Select “TOZO-A2” in the Bluetooth settings on your smartphone to pair the earphones. As with many of my previous reviews of cheap wireless earbuds, we can’t expect high-end sound quality from cheap wireless earbuds. Audiophiles should steer clear of them. Because the Tozo A2 Mini are also wireless earbuds, the sound quality is plain, but more towards a slightly stronger bass than other cheap wireless earbuds. So if you’re looking for wireless earbuds that are a bit more detailed and treble-driven, the Tozo A2 Mini probably aren’t for you. There’s also no app for setting sound profiles or adjusting EQ, and the passive noise cancellation is also good if you choose the right attachments that fit the size and shape of your ears and are sufficiently firm. This is a general statement that is understandable.

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