Characteristics: x 1. 5.0 and EDR version installed CSR Bluetooth chip: it is the latest version of wireless connection, longer connection range and lower power consumption. x 2. Using time: built-in battery provides up to 6 hours of music, 168 hours of standby time, only 1.5 hours to fully charge. x 3. Upgrade Car Stereo: Bring crystal clear sound quality to your audio feast. x 4. Built-in Mic: With the microphone, you can get hands-free phone calls while driving. x 5. Wide application: convert cassette player to Bluetooth, use in car or home system, stream music from any Bluetooth-enabled device, compatible with iPhone, Samsung, Nokia, tablets, etc. Description: x 1. Bluetooth: V5.0 x 2. Colour: black x 3. Charging time: 1.5 hours x 4. Battery life: 6 hours x 5. Customization: Universal fit The package includes: 1x Bluetooth 5.0 Adapter for cassettes 1x charging cable 1x User Manual