Perfect gift for newborn parents, newborn mother, newborn father, baby shower, birthday, Christmas, festival and so on. x 1. Version 5.0 and EDR installed Bluetooth CSR Chip: this is the latest version of the 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, full charge only takes 1.5 hours. x 3. Stereo Car Upgrade: Bring crystal clear sound quality to your audio feast. x 4. x 5. Wide application: convert cassette player into Bluetooth, use in car or home system, transfer music from any Bluetooth-enabled device, compatible with iphone, samsung, nokia, tablets, etc. Ear: 12x8 cm/4.7x3 inches x 1. Bluetooth: V5.0 x 2. Color: 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 INSTRUCTION MANUAL