Product Name OMS-M3 Bluetooth 5.4 Receiver Main features The product has a beautifully designed appearance. Designed with Bluetooth 5.4 chip, it has stronger compatibility and stability. Bluetooth receiver (RX) Upgrade NFC function, connect your phone with just one touch. Cool breathing light, signal source indicator light is clear and visible, soft and not dazzling. Built in 500mAh rechargeable lithium battery, allowing continuous listening to music for up to 10 hours Supports USB (USB flash drive) and TF card playback. Supports 5-8 meter infrared remote control, with all kinds of functions available. Built in high-definition microphone, supports wireless listening, hands-free calling, and navigation. The product connection is simple, without any complicated drivers or downloading apps; Product parameters Product Model: OMS-M3 Bluetooth version: Bluetooth V5.4 Supporting Protocol: A2DP AVRC Working frequency band: 2.402GHz -2.480GHz Power level: Power level 2 (Class II) Sensitivity: -85dBm<0.1% BER Signal to noise ratio: 90dB Distortion: 0.1% Interface type: Input: BT+USB+TF Interface output: 3.5mm AUX+RCA Supported formats: MP3/WAV/WMA/APE/FLAC/G729/M4A/ALAC/AMR/DTS/MIDI/G726/MTY Screen size: 36 * 8MM Working current: 40mA Built in battery: 3.7V/500mAh Charging current: approximately 500mA Charging time: approximately 1.5 hours Listening time: about 10H Bluetooth distance: 20M (open space) Charging method: Micro USB 5V/0.5A Compatible devices: Android, iOS system phones and PADs, active speakers, amplifiers and other playback devices Product size: 98 * 67 * 23mm (length * width * height) Product weight: 120g Packaging size: 120 * 100 * 40mm (length * width * height) Complete weight: 177.2g Color box Packing list: Bluetooth adapter host x1 Type-C charging cable x1 3.5mm audio cable x1 Red and White RCA Lotus Line x1 Infrared remote control x1 Instruction manual x1 (Chinese/English optional) Packaging box x1 (Chinese/English optional)