The two truly wireless earphones are said to be very compact and come in Black with either Copper Blue and Bordeaux Red accent color.
The O-Free Wireless Bluetooth headset supports TrueWireless Stereo which synchronizes the left and right earphone perfectly with the phone's streaming. The chip inside is a Qualcomm QCC3026 SoC.
What's more interesting the O-Free supports voice translation (no details on supported languages at the moment) similarly to Google's Pixel Buds, and wake up voice assistance and music control.
The O-Free earphones will come bundled with the Oppo Find X Lamborghini Edition and individually for CNY 699 (€90). They'll go on sale in August in China.