Tronsmart Onyx Free new Bluetooth TWS headphones with UV sterilization

Today we present a new Bluetooth headphones called Tronsmart Onyx Free that surprise us with the inclusion of a UV (ultraviolet) sterilization system in its case. These headphones have Bluetooth 5.0 TWS connectivity and have a Qualcomm aptX chip that offer us the best audio quality.

The Tronsmart Onyx Free have a touch control on the side to interact with them or to answer calls with their integrated microphone. They also offer us the Go Mono option that allows us to use each earphone independently on two devices.


The Tronsmart Onyx Free headphones have a design that offers us IPX7 protection that allows them to be submerged in water and cleaned without problems. The control of these headphones is done with its side button and depending on the type of button it is possible to perform various functions. In this watch we have a Qualcomm SoC with an ARM Cortex-M4 low consumption processor, it includes aptX support for audio without quality loss and Bluetooth 5.0 + TWS connectivity to connect with the headphones.

As autonomy these headphones allow us to play music for up to 7 hours autonomously at 50% volume and if we use the battery in the case we have an extra charge of 35 hours. In the case, as indicated, we have UV-A / UV-C lights that sterilize the headphones in a few seconds when stored inside, the case has a USB Type-C connector and fast charging.

Price and availability

  • The Tronsmart Onyx Free headphones can be purchased at the online store for $34.99 (€32) with free shipping using the ONYXFREE discount coupon (only first 500 units).

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