Ear: 12x8 cm/4.7x3 inches Adapter Bluetooth 2 in 1: this adapter bluetooth USB can be used as a bluetooth transmitter and receiver Bluetooth 50: Bluetooth 50 chip faster and more stable High fidelity chip, wider 10M signal range without barriers Adapter Bluetooth provides lower latency and higher sound quality, with noise cancellation and allows you to enjoy HIFI sound quality from your devices - Inner mesh panties Material: ABS Function: FM Size: 21x5x40mm Bluetooth version: V5.0 and 2.1EDR Output Current: 1A Operating voltage: 5 V. Connection method: Bluetooth and FM transmission Bluetooth distance: 10 M. Power mode: USB power supply Transmission frequency: 87,5 MHZ 95,0 MHZ 88 MHZ Bluetooth device name: PCLY-003 The package includes: 1x bluetooth transmitter receiver usb