An Indonesian company called Boya has launched a wireless microphone claiming to be the smallest in the world. The Boya Mini weighs just 5 g and features a 6 mm condenser microphone.
The transmitter measures 31 × 15 × 16.4 mm in size.
Equipped with a built-in DSP chip, the BOYA mini provides 3 levels of noise cancellation and 3 voice changer modes.

It offers 48 kHz/16-bit resolution and a frequency response of 20 Hz - 20 kHz, this mic offers an 80 dB signal-to-noise ratio for pure sound. The transmitter features BOYA's limiter technology, preventing audio signal peaks from distortion and clipping at up to 120 dB SPL.
Each transmitter runs up to 6 hours on a single charge, extendable to 30 hours with the charging case.
The supplied receiver plugs into the USB-C or Lightning port of a smartphone.