Specification:1. Material: ABS, aluminum alloy2. Application: common to all 5V electronic digital products3. Input voltage: 12-24V4. Output voltage: 5V5. Charging current: 3000mA6. Interface: dual USB7. Digital display: voltage test, FM frequency7. Size: 6.5x3.2 cm8. Weight: about 25 gramsFeatures:1. Indication: LED display, real-time monitoring of battery voltage and charging voltage and current2. Brand new design, dual USB full output, private mold, safe and environmentally friendly Bluetooth receiver, U disk player, FM simultaneous reception and playback3. Interface: dual USB ports work at the same time, can charge multiple devices at the same time

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