Razer launches Hammerhead USB-C earphones for the Razer Phone and iOS Mercury Edition
They aren't compatible exclusively with the Razer Phone, as they can be used with just about any Android smartphone that features USB Type C port. The Razer Hammerhead earphones are made of highly durable aluminum and feature flat cables, as well as bi-flange ear tips for passive noise isolation.
The earphones come with inline remote that allows users to control the audio fidelity from 10mm dynamic drivers. Also, Razer Hammerhead includes a custom-tuned DAC converter with digital output that's supposed to produce “clean, unprocessed audio from a USB-C enabled Android phone.”