Features: Basic Functions: Bluetooth-compatible receiver, Bluetooth-compatible transmitter, U-disk play, TF- card play, infrared- remote control, NFC-touch, microphone singing-, adjustable high and low pitch, HD-digital display,DSP,NFC 1200mAh rechargeable lithium-battery, continuous listening to music for about 8 hours, battery life up to 30 days- Support U-disk/TF- card playback and launch-, support MP3/SBC/WAV/DTS-/A52/FLAC/AAC-/AIF/AMR-APE format. Support Devices: All kinds of speakers-,desktop computer, laptop, TV, power amplifier,projectorEnhanced FM radio antenna automic-/manual search for storage stations and with infrared- remote control 6.5mm high-definition microphone, which supports microphone access for singing-, and anti-howling design. Specifications: Product Name:Multi function Bluetooth-compatible audio adapter Product version: Standard M9/-Ultimate M9 Pro Product Model: M9 Pro (with FM radio function) Bluetooth-compatible Version: Bluetooth-compatibleV5.1 Battery: 3.7V/1200mAh Charging Time: About 1.5hours Using Time: Listen to music for about 8-10 hours and stand by for 30days Transmission Range: 30-50m (barrier free) Interface: 3.5mmAUX/2RCA/USB/TF-/6.5mm-MIC Input Parameter: DC5V1A Support Protocol: A2DP/AVRCP/HFP/SBC Support Protocol: MP3/WAV/WMA/APE-/FLAC/G729/M4A/ALAC/AMR-/DTS-/MIDI/G726/MTY- Using Method: Drive free Product Material: High strength fireproof - V0 PC (70%)+ABS (30%) Package Includes: 1PCx Bluetooth-compatible Adapter 1PCx 3.5MM Cable 1PCx FM- Radio Antenna 1PCx 3.5mm-RCA Cable 1PCx Type-C Cable 1PCx Remote Control 1PCx User manual 1x Retail Package note: Due to manual measurement, please allow 1-3cm error. Make sure you don't mind before bidding. Due to the difference of different monitors, the picture may not reflect the actual color of the product. Thanks.