•[Digital Display]Features a digital tube display for clear and easy-to-read information at a glance. •[Fast Charging Support]Equipped with QC3.0 fast charging output, compatible with Quick Charge 3.0 or 2.0, for Huawei FCP, for Samsung AFC, USB BC1.2 DCP, and for Apple 2.4A charging protocols. •[High-Quality Audio]Supports stereo FM transmission and playback of various audio formats including WMA, MP3, WAV, APE, and FLAC for superior sound quality. •[Advanced Bluetooth-compatible Functionality]Bluetooth-compatible 5.0 with A2DP, AVRCP, HFP, and HSP profiles, enabling hands-free calling and stereo music streaming with DSP technology. •[Enhanced Call Quality]Incorporates CVC technology for echo cancellation and noise suppression during calls. •[Battery Voltage Detection]Monitors your car's battery voltage, providing an added layer of vehicle care. Specifications: •Model: BC77 •Net Weight: 46g •Product Dimensions: 3.85x3.9x9.5cm •Operating Voltage: 12V-24V (10-26V limit) •Operating Temperature: 0-50℃ •Supported Audio Formats: MP3 or WMA or WAV or FLAC •Signal-to-Noise Ratio: >60dB •USB Ports: USB1 (U-disk or 5V or 1A), USB2 (QC3.0 3.6V-12V) •Bluetooth-compatible Version: 5.0 •Bluetooth-compatible Range: Up to 10M •Microphone Range: 0.5-2M •FM Transmission Frequency: 87.5MHz-108.0MHz •FM Mode: Stereo digital PLL frequency locking Package included: •1 x MP3 Player Car Charger •1 x English User Manual