【Powerful Bluetooth core has the last word on your music】Listen to your lossless music the way it was meant to be heard, but without the mess of wires, anytime anywhere. The RC-BT utilizes the Qualcomm CSR8645 Bluetooth 4.1 chip, which supports the SBC, AAC, and aptX audio codecs to ensure you get the best out of your music.

【Three-button multi-function in-line control center】The in-line control box located on the RC-BT not only allows you to adjust your high quality music playback, but also allows you to stay constantly connected with its high-definition microphone. Make voice calls over Bluetooth with quality on par with the best smartphones.

【The MMCX audio connector is to turn your wired earphones into wireless】 While the RC-BT is especially designed to work with the FiiO FH1, F9, F9 Pro and FH5, its standard MMCX connector means you can transform many over-the-ear wearing earphones out on the market into a wireless set with the RC-BT.

【To enjoy is to be at ease】The RC-BT consumes extremely little power, giving battery life up to 10 hours - enough for a week of listening, 1.5 hours of music per day. And if you do run out of power, get back up quickly with only 2 hours of charging time. Also, you can enjoy high quality Bluetooth music and calls up to almost 10 meters away from your source.

【More features that you may like】Simple blue and red indicators, supports connecting with 2 separate Bluetooth devices at once, visible battery meter on iOS devices and comes with 1-year warranty.