1. Shell material: ABS 2. Shell surface technology: fine lines, high gloss 3. Features: Appearance patent. Large white screen, separate voltage display 4. Admission: 12-24 5. Output: 5V-1.0A or 5V-3.0A; 6. Total power: 7.5-25W 7. Output port type: USB, Type-C 8. Protocol: Bluetooth 5.0 9: Hardware functions: FM transmitter, Bluetooth, USB charging, U disk playback, color lights, EQ function Support ambient light Support battery voltage detection Support auto power off memory function Support FM stereo transmission technology Support U disk playback Support WMA, MP3, WAV, FLAC music format files Wireless support A2DP, AVRCP, HFP, HSP Support for wireless hands-free calling Wireless compatible stereo music support DSP technology Dual USB 3.0A 1A, Tpye-c Fast Charging One-key EQ, dual-screen