1. heart shape Mini Bluetooth USB dongle 2. Operation range: 20 meters (class 2) 3. Carrier Frequency: 2.4-2.483GHz 1. heart shape Mini Bluetooth USB dongle 2. Operation range: 20 meters (class 2)3. Carrier Frequency: 2.4-2.483GHz4. Spread Spectrum: FHSS5. Data Rate: 3Mbps 6. Input Power: DC 5V, USB Power7. Sensitivity: <-82 dBm (typical), GFSK8. LED Indicator: Single LED9. Color: black, blue, ...