Features: brand new and high quality With Bluetooth-compatible cassette adapter, your cassette deck player instantly becomes a wireless cassette player for your car or your home. Stream music from any bluetooth-compatible enabled device such as your phone, tablet, etc, no complicated installation, no cables, no tangled tape. Contains a long-lasting rechargeable battery, you can enjoy music while charging. Both of your hands stay safe on the wheel while your audio source stays in your pocket. Cassette adapter is the last cassette you'll ever need and the first -and only-step to bring your favorite music, podcasts, and audio books into your car. Specifications: Specifications: Type: E0002, E0003 Material: ABS Color: Black Size: Approx.10x6.3x0.8cm/3.93x2.48x0.31 inches Audio Format: MP3, SBC, stereo, Two Indicator Lights: Blue, Red Transfer Distance:10m Battery: Built-in 140mAh battery Charging Current: 80mA Pairing Current: 8mA Standby Current: 2mA Playing Current: 30mA Working Voltage: 3.3-4.2V Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Cassette Player Adapter 1x USB Cable 1x User Manual