This retro-style bluetooth Tape music player allows you to return to the old days and relive your good memories past. With this Bluetooth Cassette Player, you can easily transmit cassette tape music to your Bluetooth earphone or speaker, you dont need to connect an wired earphone or speaker to cassette player anymore. Easy to use: 1, Put a cassette in. 2, Connect a speaker or earphone to AUX of the device, or turn on a Bluetooth earphone or speaker. 3, Press PLAY button of the top, you should hear the sound from the cassette playing. 4, The LED should quick flash when you just connected power, device is searching the Bluetooth receivers. If you turn on your Bluetooth earphone or speaker, they will pair successful after few seconds, and LED should slow flash. And you should hear the sound from your Bluetooth receiver. Additional Instructions for Bluetooth: 1, Device starts to search Bluetooth receivers when you connect power, and LED quick flashes. 2, Usually, device will pair successful after few seconds, and LED slow flashes. 3, If you dont turn on Bluetooth receiver, or other reasons, device cannot pair successful until about three minutes, it will stop search, and LED will turn off. 4, You should power off and power on to start searching Bluetooth receiver again when the LED is turn off. Specifications: Bluetooth:4.2 Effective Distance:About 5m Supporting Agreement:A2DP, AVRCP, AVCTP, AVDTP, HFP, SPP, SMP, ATT, GAP, GATT, RFCOMM, SDP, I2CAP Signal-Noise Ratio:?90db Frequency Range:2.402GHz - 2.480GHz Audio Channel:Stereo L/R Audio Input:Cassette tape Audio Output:3.5mm earphone jack, Bluetooth transmitter User Interface:Control buttons: PLAY, STOP, F.F, REW, DIR. Auto reverse switch, Volume control. Power supply:2AA Battery(Not Included),or USB port power supply (5V DC adapter)<