ModelJ55
Receiver ModeRX mode Pair with mobile phone/MP3/Tablet, etc. transmitt music to your old car stereo/home stereo/boat/3.5mm wired headphone via 3.5mm AUX port.
Transmitter ModeTX mode Pair with your Bluetooth earphones or Bluetooth speakers, and send audio from a wired headphone jack, such as an airplane, TV, PC, or treadmill at the gym, to your Bluetooth earphones/Bluetooth speakers.
ChargingType-C
BT VersionV5.4
Battery3.7V 150mAh
Call (in receiver mode pair with phone)Build in microphone, Answer/Hang up/Reject/Redial phone calls
Working Timearound 7 hours
Charging Time1-2 hours