myVolts Ripcord USB to 7.5V DC power cable is compatible with the Casio DH-100 and lets you power the device from a USB port. Works with any USB port - laptop, phone charger, desktop PC, or even a mobile USB battery! It takes the 5V from a USB port and turns it into the 7.5V and amperage the Casio DH-100 Digital horn needs. .
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