Specification: Item Type: Audio Decoder_x000D_Material: Aluminum Alloy_x000D_Product Model: YQ-31_x000D_Bluetooth Version: 5.0_x000D_Bluetooth Protocol: A2DP, AVRCP, PBAP_x000D_U Disk Input: FAT32 Up to 32G_x000D_Music Format: MP3, WAV, WMA, APE, FLAC, SBC_x000D_Signal to Noise Ratio: 90dB_x000D_DAC SNR: 96dB_x000D_Frequency Response: 20Hz-20kHz_x000D_Sound Effect Mode: Rock, Jazz, Classical, Country_x000D_Button Battery for Remote Control: One CR2025 (Included)_x000D_Battery Capacity: 100mAh Features: 1Made of aluminum alloy, corrosion resistance, high strength, sturdy and durable. 2Powerful, stable and reliable, high chip integration, support MP3, WAV, WMA, APE and other audio formats. 3Bluetooth, USB, digital to analog conversion and transmission to ordinary speakers for playback, upgraded use of ordinary speakers. 4You can use the remote control to play or pause, switch the previous song and the next song. 5Suitable for home theater, U disk music, home K song, mobile phone music and other scenes. PackageList: 1 xAudio Decoder 1 xBluetooth Antenna 1 x Charging Cable 1 x Optical Audio Cable 1 x Instruction Book 1 x Remote Control