Bluetooth version: V5.1. Material: ABS, metal adapter Battery 200mAh Polymer 402030 Audio format: MP3/WMA/WAV/FLAC Compatible - Smartphones Range - 10M Support Systems - IOS and Android Feature - Build in microphone Special Features - Wireless, Portable, Mini Player Function: TF card playback, Bluetooth reception, answering calls, up and down songs, adding and subtracting sounds Package Includes: 1 x Car BT Adaptor 1 x 3.5mm Jack