Features: 1. Version 5.0 + EDR Bluetooth CSR Chip Installed: This is the latest version for wireless connection, longer connecting range, and lower power consumption. 2. Using Time: Built-in battery provides up to 6 hours of music time, 168 hours of standby, only takes 1.5 hours to fully charge it. 3. Upgrade Car Stereo: Bring crystal clear sound quality for audio feast. Built-in Microphone: With the mic, you can achieve hands-free phone calls when you drive. 4. Wide Application: Transform your cassette player into a Bluetooth one, use in your car or your home system, stream music from any Bluetooth-enabled device, compatible with iPhone, Samsung, Nokia, tablets, etc. Specification: Bluetooth: V5.0 Colour: Black Charging Time: 1.5 hour Battery Life: 6 hours Adaptation: universal fit Package Includes: 1x Bluetooth 5.0 Cassette Adapter 1x Charging Cable 1x User Manual Note: The product may vary slightly in color and measurement.