AK-BT2 Bluetooth Adapter

<Bluetooth> Bluetooth version v5.0 (Bluetooth Low Energy) </Bluetooth> <Supported A2DP codec> SBC </Supported A2DP codec> <Transmission distance> About 10 m* </Transmission distance> <Frequency range used> 2.4GHz band </Frequency range used> <> </> <Dimensions> 22.3 × 14.9 × 5.7 mm / 0.88 x 0.59 x 0.23 inch (W x H x D, including protrusions) </Dimensions> <Weight> 1.5 g / 0.01 lb </Weight> <Operating temperature range> 0 – 40 °C (32 - 104°F) </Operating temperature range>