The Bluetooth cassette player can be used as a personal cassette player. Insert a cassette and press PLAY to start listening to old music. The ezcap215 Bluetooth cassette player includes five control buttons - PLAY, STOP, F.F, REW, DIR and an auto reverse switch. The auto-rewind function allows the device to repeat the front and back tape songs without changing faces. The ezcap215 Bluetooth cassette player also includes a volume adjustment knob and a 3.5mm headphone jack, you can connect headphones or a speaker system to listen to music. The ezcap215 Bluetooth cassette player has two power options - AA batteries and DC power using the USB power cable. Features: Stream tape music directly to Bluetooth headphones or speakers. Automatically search and pair bluetooth receiver. Flexible battery or USB powered operation. Stereo audio. With automatic reverse function. Small and portable design. Specifications: Bluetooth: 4.2 Effective distance: about 10m Supported protocols: A2DP, AVRCP, AVCTP, AVDTP, HFP, SPP, SMP, ATT, GAP, GATT, RFCOMM, SDP, I2CAPSignal-Noise ratio: >90db Frequency range: 2.402GHz - 2.480GHz Audio Channels: Stereo L/RA Audio Input: Cassette Audio Output: 3.5mm Headphone Jack, Bluetooth Transmitter User Interface Control Buttons: PLAY, STOP, F.F, REW, DIR. Auto reverse switch, volume control. LED indicator light: flashes quickly when searching for a Bluetooth receiver, and flashes slowly when pairing is successful. Power: 2*AA batteries, or USB port power (5V DC adapter) Bit Rate: 128Kbps Dimensions: 113 x 85 x 32mm Weight: 180g Package Contents 1 x ezcap215 Bluetooth Cassette Player, 1 x USB Power Cable, 1 x Headphone, 1 x Manual