Release notes
The 1Mii ML300 Bluetooth Adapter was released in Mar, 2021 at the price of $29.99. The 1Mii ML300 Bluetooth Adapter uses Bluetooth 5.2 with support for AAC, aptX, aptX LL, SBC codecs.
The 1Mii ML300 Bluetooth Adapter can last up to 12 hours between charges, according to 1Mii.