Official OnePlus Type-C Bullets Earphones:

OnePlus Type-C Bullets Earphones have a USB-C connector. The Type-C Bullets is a great option for those picking up the OnePlus 6T which doesn’t have an audio jack.

Specification:

1. Color: Black
2. Drive Units: Dynamic
3. Bult-In ADC & DAC: Support 96KHz/24Bit HD audio
4. Material: Coil: Copper-clad aluminum, Wire Core: Enamelled copper wire, Diaphragm: Aryphan Polyarylate
5. Cable Length: 1.15 m
6. Impedance: 24 Ω
7. Sound Pressure Level (SPL): 107 dB
8. Connector: USB Type-C
9. Total Harmonic Distortion (THD): <1% (1000Hz, 1mW)
10. Rated Power: 3 mW
11. Frequency Range: 20 - 20,000 Hz

Features:

1. OnePlus Type-C Bullets Earphones have a built-in Cirrus Logic DAC which makes it compatible with wider number of USB Type-C devices.
2. Come with flat-ish rubber cables and traditional earbuds (rubber and plastic combination).
3. Use a polyarylate diaphragm made by German company ARYPHAN. The new earphones also work with the built-in EQ settings on OnePlus phones.
4. There's an in-line speaker with buttons to control music/audio playback. You can also use these buttons to receive and disconnect calls. At the bottom of the cable is the USB Type-C connector.