OnePlus Bullets Wireless Z vs Oppo Enco M31

The Bullets Wireless Z are OnePlus' pair of neckband-style Bluetooth wireless earbuds that were launched alongside the OnePlus 8 series. They are a cheaper version of the company's Bullets Wireless 2, with reduced material quality and driver count but in exchange offered a tremendously improved battery life. When I reviewed them a couple of months ago, I called them the best product in their price category. Then last month I reviewed the Oppo Enco M31, and things changed a bit. The M31 have the same form factor as the Bullets Wireless Z but didn't quite promise the same battery...

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